The Boston Bruins lost a couple of key players this offseason again and it'll be hard to replace both. 

While Tuukka Rask could likely return half way through the season, David Krejci is overseas and won't be playing for the Bruins' this season. 

That leaves a pretty big hole in the lineup which general manager Don Sweeney tried to patch it up with the signings of Erik Haula, Tomas Nosek and Nick Foligno. 

Despite the new additions, Cassidy will be looking to a player he's already familiar with to fill the role. 

“David is the one, played a big role for us – sometimes quietly,” Cassidy said this summer “Now all of a sudden, when he’s not here, we’ll probably realize how good of a player he was. I think we all knew it. But now we’re gonna live it firsthand without that one-two punch.”

First man up will be Charlie Coyle according to Cassidy.

“I think the obvious choice [for No. 2 center] is Charlie Coyle. He’s the most familiar with our guys. I’m the most familiar with him. Allow the other guys to fall into place. I know that [Erik] Haula and [Tomas] Nosek prefer to play in the middle. Nick Foligno is more of a guy that will move around so that’s probably how it will play out for him. Charlie and Taylor Hall – and [Craig] Smith was on that line last year – if Coyle can bring some of what Krech did, it will be a real good line. That’s the way we’re leaning, and we’ll see how the other pieces shake out.”

Krejci has been one of the most productive and reliable centers across the NHL the last couple of seasons, do you think Coyle can step up in his absence?