Nicol isn't convinced the 24-year-old Frenchman is cut out to play for Liverpool in the top flight.
Speaking on ESPN, Nicol said: "I really don't get this one. Yes he's had a good season but he just doesn't look like a Liverpool player to me.
"He's a little unorthodox, he looks gangly. He has got it done, the stats bear that out.
"Before the season kicks off we know PSG have won the league. I'm not sure of this.
"I'm not sure where it's coming from to be honest but I don't think this guy fits in with Liverpool."