He's definitely skilled and talented enough, I just don't think he yet has the physicality to play full time and trying to force him to that might not be good either. That said, if he and the team is willing to go for it why not. I just think it would be best for him to allow to develop physically before throwing him to a men's league. For me it's more about trying to recoup the time lost because of his knee injury rather than his size at this point.
He should definitely make his Liiga debut this season, that much I'm willing to bet. As a TPS fan I'm very excited to get to watch another great prospect brewing in our system.