Zola, however, is adamant he has the answer on his own doorstep in Guillermo Franco, the Mexico star who is starting to find his feet in the Premier League after his summer switch to the Londoners.
"He (Toni) is a player who has got experience, has scored goals and has presence in the box, and he might be good for us," said the former Italy forward.
"There is speculation but I don't like talking about players that aren't here. I'd rather talk about how I can face the situation with the players I've got.
"What Guillermo Franco is doing right now is good enough. He just needs to keep doing what he is doing. I am happy with him."