Amorim's six months at Man United have been riddled with issues both on and off the field. Will the club stick with him or will they instead choose to turn the page? Alex Pantling - UEFA/UEFA via Getty Images

The pressure is mounting on Manchester United boss Ruben Amorim.

In the immediate aftermath of Wednesday's Europa League final defeat to Tottenham Hotspur in Bilbao, Spain, club sources stressed to ESPN that the Portuguese coach retains their full backing. But that hasn't stopped the debate among fans on whether he is still the right man for the job.

A truly shocking Premier League campaign -- which could yet end with United just one place above the relegation places in 17th -- was capped off with a miserable 1-0 defeat to Spurs at Estadio de San Mames.

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The only positive of losing the Europa League final is that it will give Amorim more time on the training pitch next season. The big negative, however, is that the funds available to reshape the squad over the summer will be greatly reduced after the club missed out on a potential £100 million payday.

The case for keeping Ruben Amorim as manager

Amorim is the first to admit that results during his time in charge haven't been good enough. The key question, though, is whether it's fair to judge.

Amorim initially told United he wanted to take over in the summer. He was concerned that asking the players to learn a new tactical system midseason would cause problems and ultimately he has been proved right. He inherited a squad built for variations of a 4-3-3 formation: not his favored 3-4-3. Amorim has also had to deal with injuries to key men like Lisandro Martínez and Amad Diallo.

It has all contributed to a general feeling that Amorim and his staff have been in damage limitation mode and simply trying as best they could to limp toward the end of the season.

There hasn't been much for Amorim to shout about, but there have been positives. Since his appointment, United have beaten Manchester City at the Etihad Stadium and drawn at home. They drew 2-2 with Liverpool at Anfield and beat Arsenal with 10 men in the FA Cup at the Emirates. They were the better team for long spells during the 1-1 draw with Arsenal in the league.

Late goals against Rangers, Southampton, Leicester, Lyon and Bournemouth suggest there remains a fighting spirit within the group and the players are behind the manager. Bruno Fernandes, Luke Shaw and Diogo Dalot said as much in the wake of the Europa League final defeat to Tottenham on Wednesday night.

"It's not my decision, but I do think the manager is the right one and I don't think that it will be a better person to come into the job and do the job," said Fernandes. "I know it's difficult to understand that, it's difficult to see that. But I still do think that he's the right man to lead the club."

Amorim isn't going to change his system, and history suggests it's not necessary anyway. The majority of Premier League managers play a variation of 4-3-3, but Oliver Glasner has been effective with 3-4-3 at Crystal Palace. Antonio Conte won the league playing with a back three when he was in charge at Chelsea in 2016-17. It is possible if it's coached in the right way with the right players.

The biggest tick in Amorim's favor is that he has done it before. He took over at a struggling Sporting CP team and turned them into champions, winning three Primeira Liga titles and helping elevate players such as Viktor Gyökeres into one of the most sought-after transfer targets in Europe. Before leaving Portugal earlier this season, Amorim had a big win over Pep Guardiola in the Champions League, and in 2023 his side knocked Mikel Arteta's side out of the Europa League.

His track record in Portugal has to count for something. He's had a difficult start at United, but it works in his favor that he predicted most of it.

The big question is whether these are just teething problems, or evidence of more deeply embedded issues.

The case against keeping Amorim as manager

Mark Ogden talks about Manchester United's recruitment approach to improve the squad for next season under Ruben Amorim.

Amorim's detractors have only to point to his record in the Premier League. United have won just six of their 24 league games with Amorim in charge. More than half have ended in defeat (14).

Since Amorim's appointment in November, only Ipswich, Leicester and Southampton -- all now relegated -- have won fewer games. His win percentage of 37.8% in all competitions is well below that of predecessors David Moyes, Louis van Gaal and Erik ten Hag. It's even marginally below Ralf Rangnick's win percentage of 37.9% during his ill-fated caretaker spell in 2021-22.

Most United fans like Amorim and the way he has handled himself in the job. The question some ask, however, is whether he has done enough to get the keys to the club's future. Transfer funds are tight, and United cannot afford to get recruitment decisions wrong.

One of the issues with Amorim's tactical setup is that he has shown no desire to be flexible. He has said repeatedly he has "one idea" and he has stuck to it rigidly. Eddie Howe has occasionally adapted Newcastle's tactics this season to use a back five -- particularly effective in the Carabao Cup semifinal against Arsenal. Ange Postecoglou became more pragmatic during the Europa League run-in, which saw Spurs crowned champions on Wednesday night in Bilbao.

Amorim, meanwhile, has refused to compromise even when the plan isn't working.

The 'ESPN FC' crew put down the quality of the Europa League final between Tottenham and Man United.

The unique nature of Amorim's system means that he will naturally want specialists to fill specific positions, whether it's wing backs or narrow forwards. Recruitment at Old Trafford is done by committee, but Amorim stressed on his first day on the job that he needs a big say.

The danger is that Amorim gets his players in the summer and results don't pick up. It would leave United bosses with a decision to make in October or November -- just as they had with Ten Hag this season.

It's possible that, if things don't work out with Amorim, United could look to hire a replacement who wants to revert back to 4-3-3 and asks for a different profile of player in the transfer market. It would leave them facing another rebuild a year down the line with little progress to show for it in the interim. All the while, Manchester City, Arsenal and Liverpool will be getting better, and the gap with the teams at the top of the table will grow wider and wider.

Sources have told ESPN that United chiefs have found the transition to Amorim harder than they expected. They were hoping for some sort of bounce in results and, in the Premier League at least, it hasn't happened.

The worry is that the poor domestic form puts Amorim under intense pressure right at the start of next season. In that sense, there are similarities with Ten Hag last summer and that ended in the Dutchman's sacking before Christmas.