I see that Brentford rejected Manchester United bid to sign Mboymo, I don’t know the reading for the rejection but I am sure it is because of money, maybe the amount is too small because Brentford like selling their players expensive, although the player is a good player and can help Manchester United especially with goals because he already have Premier League experience and will not struggle to adapt to Manchester United’s style of play.
Brentford rejected MU's first offer, yes that's true. However, they receive another bid, which is getting improved from the first bid. They wanted MU to increase their bid, and they receive what they wanted. No reason not to call no to MU's offer as long as it's meet their asking price.
I have no clue what happen behind the scene, but i believe the talk is still ongoing between them and MU's representative. I hope an announcement to be rolling out in the coming days.
Even there is a rumor says a medical check up booked for Mbeumo.