Friends that I can't remove

Hello!
I saw a small bug or something like that.
Since a while I added a guy as a friend because I faced him 2 seasons in a row in the championship cup final then in the league. Now, I saw that I've him in the championship cup again.... I would avoid to find him in the leage as well but I CAN'T remove form the friend list. I don't have the "-" option!
please let me know how to do!
MDB

There should be a minus, unless he is also a Facebook friend, in which case you have to remove him in FB. If that is not the case, try contacting Nordeus Support