Once we come across a good player to to play with in 2v2 quick match I often see a message " Join my Clan "
I have to go back and see who I was playing with and click on there Clan to check there Clan out and see if I would want to join them. Then leave my Clan and search for there Clan to ask to Join.
It would be good if you changed it to something like " Check my Clan out" with a link to there Clan page were you can just check it the Clan your invited to or even to comper to the Clan your already in with and choice to join or not on the same page somehow.
Saves you from having to searching who you played then leaving the Clan and then searching for the Clan you want to join.