Mourinho won the League Cup and Europa League with United last season and his side are now second in the Premier League and in the FA Cup semi-finals.
Manchester United are currently second in the Premier League table but are still a massive 16 points behind leaders Manchester City, with the FA Cup, where they face Tottenham Hotspur in the semi-finals, the only realistic chance Mourinho's men now have of winning a major trophy this season.
"We have the potential to win the World Cup", said Pogba.
Manchester United on Tuesday said that both season and match ticket prices will be frozen for the seventh season in a row ahead of the upcoming 2018-19 campaign.
"The club enjoys unparalleled support and we recognise the sacrifice many fans make to watch the team home and away".
"We have more points than last season", he added.
Mourinho has United on course to finish second this season, a vast improvement on their sixth-place finish a year ago. "We have more goals scored, less goals conceded, we finished sixth last season, so we're going to try to finish second, so the season is not as bad as you try to make it out to be".
However, the player himself has now broken his silence about his situation by insisting that everything is OK between him and Mourinho. "Team played very well in the first half, he played very well in the first half".
But Mourinho - a long-term adversary of the former Barcelona boss - singled out Swansea manager Carlos Carvalhal for special praise despite the Swans defeat on Saturday - just their second in the league since he took over in January.