"So I hope I'm wrong, but I don't see them challenging for the league this year".
Pogba would earn £89.5m over five years but Manchester United have already rejected one offer from Barca.
United laboured to a 2-1 win over Leicester City last Friday and Neville believes the type of player Mourinho has invested in means the days of United being considered as the Premier League's most entertaining side are long gone.
A top centre-back was definitely a priority but Jose's needs were ignored by the Old Trafford hierarchy and he's left with the same set of players in that position.
Asked about his situation, Pogba said: "There are things I can't say, otherwise I will get fined".
"If Pogba stays beyond the August deadline, Raiola's agent is to get Pogba an upgrade in his contract where we see Pogba becomes the best paid player at Man United", McGarry told the Transfer Window podcast.
The former Chelsea manager was clearly referencing Pogba's decision to leave United in 2012 for Juventus when he felt he wasn't given enough playing time by Sir Alex Ferguson. If a particularly good deal presents itself in January, the club can presumably anticipate their new, increased sponsorship revenue and take the hit for a few months.
That is what the French coach is dreaming about according to the newspaper 'L'Equipe' with the former Real Madrid coach being tempted to try his hand in the Premier League.
Ex Man United striker Dimitar Berbatov is confident that Pogba and Mourinho will be able to "figure it out".
"These stories are not good for anybody, but Jose and Pogba will figure it out". Let us know what you think by leaving a comment below.