Celtic fan here.
Boruc has been my hero for a very long time (I am also a keeper) and I'm glad he is now a Premiership player. He loves telling his defenders what for. Kept the scores respectable in the big games (CL, Finals, etc) but was reliable to a howler or 2 in his second-to-last season because he got overweight, and couldn't really be arsed with Glasgow. Commanding as eff in the crosses, and will take out 6 of his own players if he needs to. Moves like a cat, and is a beast at saving penalties an one-one-ones. Probably the closest thing to having Peter Schmeichel in goals nowadays. Won't be going on International Duty any time soon as he had a fall-out with the manager. If he keeps himself fit, Southampton will have one of the top 5 keepers in the league.