Jose Mourinho had earlier stated that the club is seeking recruitments in midfield and on the flanks, with a proven winger a key target.
Moura was once considered to be one of the most exciting young talents in world football and was strongly linked with a move to United before joining PSG in a big-money deal from Sao Paulo in 2013.
Yet the arrivals of Neymar and Kylian Mbappe have kept him out of the teamsheet.
It is little surprise then that they are reluctant to allow the likes of Pastore and Moura, who are good enough to command decent transfer fees, to leave only on loan.
PSG are interested in Malcom and hope that he will still be a Bordeaux player this summer but know that he is attracting plenty of interest, notably from Manchester United, and that they would be unable to compete with any offer made this month.
Argentinian Pastore has been more involved, starting eight of PSG's 19 league games in 2018-19, but he is far from guaranteed a first-team spot. Again, they told me yes in principle.
However, United would prefer to take the 25-year-old on a short-term loan until the end of the season.
The January transfer window is now open so clubs are working hard trying to strengthen their squads for the second half of the season and put deals in place for the summer.