Manchester United completed their first signing for this summer by agreeing deal with Fred from Shakhtar Donetsk.Red Devils will pay £52 m to Ukrainian club. Fred will become only 7th Brazilian in the history of the club. However he can be more successful than Anderson, Da Silva brothers, or even Kleberson.Jose Mourinho was choosing between him and Jorginho. Napoli star has almost agreed with Manchester City.According to many reports Paul Pogba can be given green light to leave the club as Frenchman hasn’t convinced about his level. However, if Pogba stays in Manchester, Mourinho can use different variations for midfield and attacking lines.Choice #1Fred can share the center with Nemanja Matic, while Pogba will be given the role of #10. Mourinho used this tactics in 2017/18 campaign. Sometimes it was successful, as Pogba had chance to concentrate more on creating rather than destroying.Choice #2Fred can play with Nemanja Matic, however he will be given the role of #8, box-to-box midfielder. In this case he will do the job as Pogba was doing this season. Pogba’s main problem was the lack of defensive skills, but Fred will fill this gapChoice #3Fred can also ba #6, defensive midfielder. Sometimes Mourinho may give rest to Matic, and Fred will need to do the job Serbia international does.