There are almost no players left from the team that Mourinho coached at Manchester United, so it will be a different team and yes, it will be weaker than before. Fenerbahce is also not the strongest club and in the last round they could not beat Twente, so it is not worth saying that they are now definitely stronger than Manchester United, they also played a draw with Twente and with a more difficult opponent Porto. Ten Hag's position is very shaky, any defeat for him could be the last in Manchester United.
Therefore I said Mourinho will fight his former club not his former protégé. At least Mourinho's tactics are much more effective than Erik Ten Hag, that's what I can see from both teams when they meet later. Just to remind you that any defeat that Man United gets will not make Erik Ten Hag fired, he seems to have strong backing behind the scenes, so that the bad results throughout this season do not make his status waver in front of Man United top brass. Ineos and Sir Jim do not seem to take a firm stance against him.
There is no chance of Manchester United winning this match due to the current performance of Manchester United in the European League. It will not be surprising if Manchester United gets 1 point in this match like the other two matches. However, I am waiting for a great comeback from Manchester United and I hope they will make that comeback against Fenerbahçe.
With all the uncertainty of Man United during several matches, this club will always find a dead end in every match not only in the European League but also in the English League, the results are the same, not developing and not doing anything better. Fenerbahçe must teach Man United a lesson about playing with tactics.