The Premier League giants are now faced with the prospect of keeping an unhappy squad member, who is set to earn a basic wage of £9.62m this season, plus a £3.78m loyalty bonus or grant Pogba's wish and open negotiations with Barcelona.
Sanchez told Sky Sports: "From what I've seen in training, Fred is a player who always wants to get forward, he is always trying to get forward and from a personal point of view I think we'll be able to combine well and it will be good for my game".
Boateng of Bayern Munich is said to be interested in a move to Old Trafford, but that would only be a season-long loan from the Bundesliga club.
Coming in for a world record transfer fee of around £89 million, the World Cup victor took a while to get going back in Manchester, but he did help the club win both the League Cup and the Europa League in his first season back.
Pogba is just two years into a five-year contract at Old Trafford, but the France global has endured a mixed time at the Premier League giants under Mourinho. Mourinho had warned the Red Devils that they could be in for a tough season but it is up to the players now to get a confidence-boosting win in the season opener.
The United manager also wanted Marouane Fellaini re-signed on a new contract.
Leicester looked startled by United's early intensity but began to fell their way into the match as debutant James Maddison impressed and their wide men made in-roads. "I won eight championships and three Premier Leagues but I keep feeling the second last season was one of my biggest achievements in the game". One lie repeated 1,000 times is still a lie but the perception of people is that it's true.
"It was my first goal and that is all that was important, it doesn't matter how I scored", he said.
"In football, you need time to work and you need players on the pitch to work with which we didn't have until now".
"To know how they feel physically mentally to try to give us a help, if they feel they can help us, 20 minutes, 10 minutes, half an hour".