The real reason why Mike Ross did not return in season 8 of 'Suits' is that Patrick J. Adams believed that there was nothing more left to be explored for the character. Mike's fraudulent qualifications were found out and he did time in the jail as well.

Why did Suits Get rid of Mike Ross?

Adams leave Suits in the first place? For obvious reasons, Patrick's character was romantically involved with Meghan's Rachel Zane. Patrick also felt as though there wasn't anything more that the writers could do to develop Mike Ross, so his character eventually moved to Seattle after marrying Rachel.

How did Mike betray Harvey Suits?

She then gave the money to Harvey's brother for him to pay back. ... Donna realizes this is because Harvey's mother cheated on his father, and tells Harvey that he needs to let go of the past. Harvey lashes out at Mike for betraying him, firing him as his associate and leaving Mike to return to the associate pool.