Aye if you like mistakes every game and little attacking prowess. Risse is a very good LB. There arn't many that offer anything more than him in the game.
If a team scores against Manchester United, referees are no longer required to offer them every advantage possible. If a team scores against Chelsea, referees are required to offer them every advantage possible.
I don't see why we would want him. He's past his best, never scored 20 premiership goals in a season, poor coming back from injury, injury prone and can't create chances for himself or others. Oh and he buggered off to win trophies.