You can have him. I don't think he fit in with Babs' schemes or style. Everyone can say all they want glorifying him in interviews, but when a team trades their captain who has a no-trade clause... it says a lot about the team's and the player's desire to part ways. It just wasn't working, and he's not part of the future that the Leafs need to build for.
As for how much he helps the Sens chances at making a playoff run? I'll predict right now he'll be a non-factor at best, and an impediment at worst.