His tweet about Manchester was deleted before Bakayoko was seen posing with ChelseastarDavid Luiz and super-agent Kia Joorabchian, hinting a deal was done.
Both Costa and Matic have always been touted with a move this summer after being considered surplus to requirements by Conte, with Atletico Madrid and Juventus the front-runners for the duo respectively.
Although the Blues failed with a bid of £37m earlier in the month it was expected they would come back with a bigger offer but apparently United are "confident" they have won the auction.
Matic was an important figure in the Chelsea line-up last season, making 30 starts in the league alongside N'Golo Kante, helping them win the title for the second time in three years.
That's changed in the past few days with Antonio Rudiger, 24, arriving from Roma in a £29m deal. The club are in talks with Real Madrid over right-back Danilo and striker Alvaro Morata, and are also negotiating with Juventus for left-back Alex Sandro.
Harry visits Westminster Abbey with King and Queen of Spain
Queen Letizia dared to bare some flesh during the evening in a solid navy column dress matched with glistening diamonds. Prince Philip and Felipe first inspected troops at central London's Horse Guards Parade, a former royal jousting yard.
Cosmo DiNardo Admits to Killing Four Missing Bucks Men
One day later, he and Kratz returned to the farm and used the backhoe to dig a deeper hole and buried the metal tank. Dinardo then drove the backhoe over Meo and "basically crushes him", Kratz told police, according to the complaint.