You give him 2 years. It's stability that matters and right now he is absolutely the perfect partner for Karlsson and he's a huge part of the reason Karlsson is having the year he is and it often goes over looked.
If someone beats him out of his job next year then great, you have a solid 5, 6 guy that's capable of playing 25 mins a night. If no one comes in and takes his job then it's a good thing the Sens have him signed for an additional year.
It's about what's right for the team and what allows players to develope at the right pace and in the right situation they should be playing in. People forget that a lot around here and think that a guy like Boroweicki is going to come right in and do that job as well as Kuba. He might one day, hell he might next year but there is ZERO gaurantee of that happening.