Liverpool have been linked with a move for the 24-year-old attacker in the summer transfer window.
The Merseyside outfit are not the only club interested in Mane, though, as Arsenal and Manchester United are also supposedly keen on the former Red Bull Salzburg man.
Former Liverpool defender Beglin has suggested on Twitter that he has been impressed with Mane.
For a wide attacking position that's notorious for inconsistent performers, Sadio Mane goes against the grain. I like his game.— Jim Beglin (@jimbeglin) May 27, 2016
Mane has been on the books of Southampton since the summer of 2014 and has a contract until June 2018.
The Senegal international scored 11 goals and created 41 chances in 37 league matches for Southampton this past season.