Boston College quarterback Thomas Castellanos will leave the program and is expected to transfer with one year of eligibility remaining, he announced on social media Thursday. Castellanos’ decision comes after coach Bill O’Brien announced Monday that Grayson James will start at quarterback for the Eagles this week against No. 14 SMU.

“I’ve had some of the best experiences of my life in the Eagles Nest and I will truly cherish these memories forever,” Castellanos wrote. “Unfortunately, all good things come to an end, even though it’s sooner than I would like. I will trust in God and his plan for me on my journey. Eagles Nest you’ll always have a special place in my heart.”

After the benching, O’Brien said that Castellanos was “taking a couple of days” away from the team. He was not expected to travel to Dallas for the matchup. Castellanos started 20 games for the Golden Eagles over the past two seasons, but was bypassed as BC (5-4, 2-3 ACC) scraps to reach bowl eligibility during O’Brien’s first season.

“Obviously, he wasn’t real thrilled with that,” O’Brien said Monday.