Bayern have so far failed with three offers in the last week for the wantaway Senegal star.
Cisse said: "It's not just Sadio, I'm going to talk about it for all those players who are in a situation where they have to find a club, it's complicated. Why? Because it is all this problem that awaits us for the World Cup which is in November.
"And I tell my boys to try to settle the contract problems so that when their respective championships resume, they will have already found a base. I heard about Sadio at Bayern.
"Bayern is intensity, pressure football with a German coach. Sadio played in Salzburg in Austria which is a border country, and that means he is not going into unknown territory. For me, the club where he will feel the best is Bayern."