Cassidy also spoke about the importance of Boston's young nucleus getting acclimated to being in leadership roles.
"Pastrnak, Charlie and Brandon are three younger guys that have now been here for a while -I can't predict where they are gonna be - but let's assume contract-wise and all those things that they're here," said Cassidy. " They are the next wave of the leaders in the core group of this team and they are already pushing their way into that, if they are not already in it."
Cassidy has high hopes that someone from that group of core players could have a different letter on his sweater down the road.
"There's a pretty good chance - I don't want to speculate - but they might be a captain of the Bruins down the road," said Cassidy.
Pastrnak also touched on a number of other topics following Friday's practice:
Competitive Nature: The Bruins put on a show at the end of practice with some 3-on-3 hockey, pushing each other to simulate as close to a game feeling as possible. "It's no secret we have a very competitive group," Pastrnak said when asked about the drill.
"This kind of drill is obviously much better than skating around with no puck. Obviously, there's only one team that can win so it's fun and it keeps a nice energy in the room with a few chirps around. It's great to finish up practice this way"
Carb Load: Pastrnak recently partnered with Stop&Shop to sell "Pasta's Pasta" to raise money for the Dana Farber Cancer Institute. When asked what his mother thought of the Pasta, he was happy to say she is looking forward to enjoying some of her own.
"She was just asking me today if it was going to make it to Czech Republic, she will be able to actually buy it so she is going to buy it to help out the cause," said Pastrnak.
Olympics Bound: Pastrnak will be headed to the 2022 Beijing Games in his first Olympics experience this February to represent his home country of Czech Republic, an honor that was announced by the national team on Thursday.
"Very happy to get the message yesterday," said Pastrnak. "It was a childhood dream to play at the Olympics for my country. It was very touching and I am honored. I am always going to love to represent my country and I feel very humbled."