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I think they're going to regret signing him again into their team because he's not create any impact for them yet due to his lengthy injury spells that's kept him out of the squad for a while and they could benefit from his talent and i know Allegri would he so furious about this news because they were expecting his return to help the club improve this season, well I don't think he might continue being Juventus player anymore and they could let him leave the team.
Well you're right because Neymar is an injury prone player and they still signed him to a Saudi team due to his quality and that might end up being Pogba's fate cause no top European club would sign due to his injury problems, signing him would be like bringing a dead wood into the team, the Saudi club might not benefit from his performance on the pitch but he'll make their team more popular.
Juventus management will make efforts to cover losses when recruiting Pogba back to Turin, the SPL is a suitable prospect to encourage Pogba to continue his career. Moreover, the clubs there are not too concerned about the condition of the players, what is important to them now is the players' big names. It's only natural because they are building an image to make their name increasingly popular in world football.
However, the biggest obstacle now is that Pogba is indicated to be using doping, this is the biggest disaster for him. It is reported that Pogba will undergo a second test, if he is detected using it, Pogba will be banned from playing for up to four years. In at least two years, if I don't do it on purpose, I think Pogba will retire early.