Having watched it live and a few times since, it does appear that there was a little step on Basso. If there was intent and he did make contact, then he has to go.
I was in J block and saw the kepper collect the ball and no reaction when Fraser went over. The next minute the ref pulls him up and the keeper looks like hes been shot.
I thought it was a clear a red card as I've seen all season. Their goalie made a real meal of it and I sincerely doubt whether Fraser intended to hurt the fella but if you jump with studs raised, you're going to get a red card these days.