Yes you can, if you have cheap contracts subbing in with your all-star center and producing like Sheary did with Crosby.
But then those ELC players need contracts. If we were in a cup contention window or close to one...it'd be one thing. But...we're likely 2-3 years away from that. If Skinner were an elite forward, i'd say sign me up. He isn't.
You sign forward UFAs (players 25-28 year old range) to long term deals because you feel that they have 2-3 "prime" years left where they can be as good as the best years of their career. You understand that the back end of contracts (3-4 years) the player will be in decline. However, since you don't have to develop this player, you don't give up assets for this player, the risk typically is considered worth it
So, let's review Jeff Skinner. He's a one dimensional goal scorer. He scores goals. We need goals.
He is a good skater, which we also need.
But...looking at his game as a whole? He typically is pretty sheltered. Try to hide his poor back-checking down the depth chart.
He didn't play on the top PP unit on a team pretty bereft of goal scorers in Carolina. They were ranked 22nd. It's reminiscent of why Kane wasn't on the top PP unit, it worked better with other players.
Let's be 100% clear here. Skinner is a great goal scorer. And he brings speed. But....he's not (and he won't be) a core winger. To go through and pay the premium price for a secondary winger that will be on the downside of his career when our contention window opens up would be silly.
Now, if he has chemistry with Eichel or Mittelstadt and it looks like our contention window might open up sooner than expected, I'm fine with looking at an extension. But...looking at the most likely scenario (Improvement next year, but not quite there yet)....we should plan for Skinner to be gone at the trade deadline.