On one hand that may be what Mbeumo feels but on the other hand I think it is a little bit for Manchester United to be able to bring in Mbeumo because of the competition from Tottenham who also want him so Brentford will certainly consider an offer that is profitable for them.
For Mbeumo, he also has to think about his future, Tottenham will compete in the UCL next season, that will certainly be an attraction for a player who wants to develop further while Man United is in a slump in the last few seasons which makes a player think more deeply about joining them.
Manchester United have considered all possibilities and if they fail to get Mbeumo then they will move to find another replacement.
The Champions League is indeed an attraction for a player to join another club, but they also need to consider the long term.
Manchester United are indeed in difficult times and maybe this is where players are needed who have loyalty to play for the club.
Brentford will certainly consider an offer that is profitable and whoever can buy at a high price will definitely get Mbeumo.
Tottenham and Manchester United both have a chance but if it comes to profit perhaps Brentford will try to consider who can afford to make a big offer.