Former England national footballer Mills has belittled Messi's ability.
Regarding the possibility of Messi joining the Premier League "BIG6", Mills said: "Will Premier League teams sign Messi now? Probably not. Manchester City, no; Liverpool, no; Tottenham? I don't think They'll bring in Messi. I don't think he's fit for a BIG6 team in the Premier League at the moment."
In any case, despite some recent speculation that Paris wants to leave Messi, Messi has not entered the transfer market. The Argentine superstar will remain in Paris and is motivated to work under Galtier, building on his 11 goals last season.
Messi was originally allowed to delay his return for a week, but he returned to the team ahead of schedule. He didn't have a good pre-season training in Paris last season because of the Copa America and transfers, which affected his performance all season. This season he hopes to make the most of his preseason training to get used to the new coach's tactics.