Ah yes. I have been playing around with the association tool myself and really love it.
It allows us to view, track and play with other teams without the need to add as friends which is a good option as friends affect the draws if you are around the same level.
But people also create friendlies with you which can be annoying at times. I was doing my daily training earlier today and all of a sudden I couldn’t because a match had started and I had to wait until the match ended to resume. And I got no notification while I was training that a friendly had been arranged, if not I would have definitely cancelled.