The seven-time Ballon d'Or winner has been at his level best since making the move to the French capital, scoring just two goals in 14 Ligue 1 appearances.
The Argentine endured another frustrating even as Kylian Mbappe netted a late winner to sink Rennes on Friday.
Well-respected French analyst Pierre Menes feels that Pochettino is not using Messi in the right position.
"I thought that Pochettino understood after the match against Lille that Messi was better in a more advanced position. But no, not at all.
"He made him play again in a leading position, sometimes on the right, sometimes on the left, sometimes in the middle...essentially, in a position where he clearly no longer has the physicality to dominate the game.
"At his age and with his talent in front of goal, he would be much more useful to PSG.
"But hey, I'm not the PSG coach."