Did not play center, and I haven't seen him play center once in the past three years, not even in U20. So at this point I'd say he's pretty much a winger.
Been raving about the kid for a couple of years now. He was one of the best players for TPS in the second part of last season, only reason along Vähätalo to drag myself to the arena at the end of the season. Has started this season really well too, has created a lot of chances, but only one assist so far since his teammates really can't score. Hasn't been getting any PP time that IMO he deserves, but hopefully he will as the season progresses.
As has been said in this thread he is a playmaker with nice hands and great vision. Along with skating and defensive abilities I think he has to work on his scoring. Has a good shot, but needs to score more goals. He's good on 1on1's, which is showcased in the video below(setup for a goal as a 16 year old 1.44-->).
Don't know if you can see this one abroad, but a video of his first assist of the year(2.07-->) and a golden set up for Sointu(0.58-->).
http://www.ruutu.fi/ohjelmat/sm-liiga/huippuhetket-tps-kalpa-1892014