I think difficult for stopping Bayern Leverkusen winning Bundesliga tittle in this season seems Bayern Munich make many rotation for match against FC Koln, however its very important match because Bayern Munich has the same points with Stuttgart on current standings and near future with the 5th standings team behind 7 points left.
Leverkusen has been breaking all sorts of records this season. And now they only need to win one more match to actually make sure that they win the Bundesliga title. But there is a problem. Leverkusen is going to play against West Ham in the quarterfinal of the Europa League competition next Friday. And on Sunday they will play against Bremen in the Bundesliga. I know there is a very good chance that they will end up winning both of them. But I think as they are almost certain that they will win the Bundesliga title, they might actually give the Europa League competition a little more interest and that might cause them to not win or even lose the match against Bremen. Again the way they have played so far in this season, it is possible that they win the Europa League match and get one point in the Bundesliga match. But I think we might have to wait a little to see if they will eventually win the Bundesliga or not.