Ngog rapped for taking Liverpool cash
"David's choice is a more economic one than a sport one," Rabat told France-Football. "He won't be given a lot of time to play. He will have to fight to impose himself. Him leaving PSG so young is a shame.
"He has been lacking self-confidence for a year now and he didn't score a lot. Pauleta's departure offered him a chance to play his part, but he had some bad experiences.
"For example he was not part of the squad for the Coupe de France final, I think this hurt him.
"He grew up a lot in a short space of time and has had lots of physical and muscular problems that slowed him down.
"And don't forget that a certain Fernando Torres will be above him."