If there is any party which will be glad for his return, it will surely be the Liverpool fans as they felt the impact of him leaving the club last season and Liverpool struggled to play and cope with his absence but later readjusted so I think if there is a slight chance of him returning the club will surely welcome him with open hands.
Sadio Mane is still a very good player and it won't be a problem if he has to return to his old club or to the Premier League again next season, because as long as it can be very good for him, of course any team will welcome him very openly. But lately there have been a lot of rumors whose certainty is still in doubt because there are many teams who are hunting for the best players for next season and I would also be quite happy if Sadio Mane could return to the Premier League next season.