Reports have suggested that the Spanish giants have been monitoring the progress of the Moroccan international and could be ready to make a move for his signature.
Taarabt has been one of the star performers for QPR this season and stole the headlines once again as he helped the west London club secure their first victory of the season against Fulham last weekend.
But Redknapp insists he is not going anywhere in January and remains a vital part of the club's long-term future.
Redknapp said: "Barcelona want him do they? Maybe we will have a swap with Messi. We'll do a deal. We don't want to sell him and nobody has made an offer for him. He plays here."
Redknapp admits the only way he could lose Taarabt in January is if he is called up by Morocco to play in the Africa Cup of Nations.
Redknapp added: "They have to go if they get picked by their nation.
"I haven't spoken to him about it. I'm just really concentrating on the next couple of games. Hopefully he doesn't get picked. We need him here."