Zlatan scored 29 goals in 53 appearances for United, but 28 of those came in his first season before it was curtailed by a serious knee injury suffered in the Europa League.
With United midfielder Nemanja Matic, the only Serbian or Montenegrin worldwide at the club, out of action due to a back injury, it was clear that Mourinho was scouting a potential transfer target.
Pogba made his France debut in 2013, and has racked up 62 caps while appearing at three major tournaments.
The 25-year-old midfielder played a big part in Les Bleus' campaign in Russian Federation, scoring a goal in the final as Didier Deschamps' side beat Croatia 4-2 to lift the coveted trophy.
"That allows me to relay messages and have the chance to be heard".
Le Saux, who grew up playing football in his native Jersey before going on to enjoy a superlative career with Blackburn, Chelsea and Southampton, added: 'Performance-wise, Manchester United are a shadow of where they should be in terms of the quality they've got and the status of the club.
Pogba has joined up with the France squad this week and was asked about the possibility of captaining his country in the near future.
"For me, a leader isn't someone who wears something on his arm, who puts on the captain's armband. This is his third year, the players know more and more the way he wants to play and how he wants it - so I believe, yes".
Pogba insists he is the ideal go-between for the older players and younger members of Didier Deschamps' squad. "Whether it be "Grizou" [Antoine Griezmann], Kylian [Mbappe] or Raph [Varane], they deserve it a lot more than me".
Manchester United have been dominating all the headlines since before the ongoing campaign even began, be it due to failed transfers in the summer window, poor results on the pitch, or controversial arguments and disagreements off it.