He said: "We aim to win all three, but let's concentrate on beating Besiktas first before we start thinking about what we do in the last game in Marseille.
"We must win this one, then move on to beat Porto. That's two home games and our crowd will play a big part, then we will think about what we must do in Marseille.
"We are not worrying too much about what happens if we do not qualify, and I don't even see that as a disaster. It's just football, but if we don't get through we could qualify for the UEFA Cup and we would be confident going into that.
"Obviously we want to be in the Champions League, we want to play against the best and show we can compete against them. But we have done that anyway in the last couple of years or so with two final appearances.
"If it happens we have to get on with it. It would be a disappointment, not a disaster, and it would still be a massive season ahead for us with genuine targets."