It seems there's no hard feelings towards the Bruins as this is just business and it was told that general manager Don Sweeney was looking to resign him, but it appears that the Pittsburgh Penguins had a better offer and general manager Kyle Dubas won his pitch.
Even with his departure, Sweeney made quick work and managed to lock down Nikita Zadorov to a six-year contract worth $5,000,000 per season.