The reason for Lucic's arrest was an incident where he assaulted his wife. The Bruins forward was charged and did appear in court, but his wife didn't want to testify against him.
What sparked this confrontation was Brittany catching another girls name on his phone, which lead to Lucic strangling her in front of her kids and her friends kids as well.
He then grabbed me by my throat with his thumbs pressed against my windpipe so I could not breath [sic]. The force and momentum of him grabbing me caused me to lose my footing and stumble backwards, landing against a chair.
Since this Brittany has put a restraining order on Milan and also has filed for a divorce. It's clear to say that Milan Lucic's time in the NHL is more than likely done.