Why did Man United take so long to agree a deal for Bryan Mbeumo? (1:14)Open Extended ReactionsManchester United have announced the signing of forward Bryan Mbeumo from Brentford for a transfer fee sources told ESPN was worth in excess of £70 million ($94m). Mbeumo could make his debut for United during their three-match preseason tour of the United States. - Rashford arrives in Barcelona ahead of loan move- Matheus Cunha: 'Dream' to succeed Rashford as Man United No. Brentford sources, meanwhile, believe United purposely negotiated a high wage with Mbeumo to convince him to move to Old Trafford before offering lower than expected transfer fees during formal negotiations.