Lemina joined Southampton from Juventus for a club-record price of £15.4million in the summertime switch window.
He has inspired in his appearances so far for the Saints, particularly within the 1-Zero win over Crystal Palace final Saturday.
Merson likes what he sees however says the Gabon world should turn out himself in opposition to more difficult opposition, beginning with Manchester United these days (3pm).
“I don’t want to sound a bit of a cynic here but that was against a struggling Crystal Palace team who could probably walk under a snake with a top hat on, their confidence is that low,” Merson stated on Sky Sports.
“Now they’re going to play in opposition to Man United who these days are within the most sensible two within the nation.
“That’s once we’ll inform (how just right he’s). He used to be remarkable (in opposition to Palace), now he’s going to come back up in opposition to (Nemanja) Matic these days.”
Former Arsenal ahead Merson says if Lemina does shine these days it might make other folks take a seat up and spot.
And he joked Liverpool, who’ve a historical past of signing Southampton avid gamers, would get him next summer season.
“Yeah I know (he’s been at Juventus) but he couldn’t have done that great because he’s at Southampton,” Merson added.
“What I noticed there he used to be excellent, that is his check these days, enjoying at house in opposition to a just right Man United midfield.
“If he begins getting at the ball and dictating, you will have to start out pronouncing what a signing he’s.
“He’ll probably pass and play for Liverpool next season.”