Taarabt is a top target for Sevilla.
Ex-Spurs ace Taarabt missed out on a big-money move to Paris St-Germain when it broke down in the summer. Warnock said: "The ability that Adel has got is not in question.
"He's got to put the other part into his game and is trying hard to do that. I've said to him if you look at the top clubs like Barcelona, all the players work their socks off.
"I don't think he is thinking about his next move — not now. I think he just wants to play well and keep his position in the team. He is a lovely lad, trains hard — that's how he is."