It's something that's been building since last season. 

The tension between Boston Bruins head coach Bruce Cassidy and young Bruins' forward Jake DeBrusk. 

DeBrusk was made a healthy scratch a couple of times last year and called out by Cassidy and he's found himself scratched again this year. 

Enough is enough it seems. 

According to NHL insider Elliotte Friedman, the 25 year old forward and his agent have requested a trade out of Boston. 

DeBrusk's agent, Rick Valette, confirmed the request according to TSN's Ryan Rishaug. 

"Spoke with Rick Valette today, agent for Jake DeBrusk, he confirmed he asked for a trade over the weekend. It's felt a change of scenery moving forward would be beneficial. Debrusk will remain with the team while the Bruins try and facilitate the request."

The winger has 6 points in 17 games so far this season and has registered a total of 140 points in 261 NHL games.