The Parkhead boss said: "Rafik is just one of a number of defenders we're considering at the moment."
The Algerian's agent, Ivan Modia, is still hopeful that, following his trial at Lennoxtown last week, a deal can be struck to take the 25-year-old from Fulham, but admitted no figures have yet been discussed.
Celtic have also been linked with Nottingham Forest's centre-back, Luke Chambers, who is out of contract in the summer while Real Zaragoza's 23-year-old Serbian defender, Ivan Obradovic, is the latest name reported to be on the Hoops' radar.




