Jol wanted him last season but knew his chances were slim after United hammered Fulham 5-0.
"I think that put him off a bit," said Jol, whose team take on Sunderland at Craven Cottage this afternoon.
"But when I spoke to him I said that I have worked in Hamburg, in Amsterdam. I am here at Fulham now, why shouldn't you be here?"
Jol also gave an insight into the enigmatic striker's character that belies his public persona.
"He is a nice guy to have around. He is smiling and he loves his football - and taking penalties!"
Recalling his coolly-taken spot-kick against Arsenal last week, Jol added: "I asked him to just hit the ball, to strike it into the net.
"He said he'd wait for the keeper to move. That is what he did - in front of 60,000 people. That is why he came over to me at the bench after the goal."