The  Boston Celtics have signed restricted free agent guard Marcus Smart to a  a four-year, $52 million contract extension, ESPN reports.

The Celtics announced on Thursday that the deal had been made but did not disclose the terms.

“This is where I want to be, and I’m ready to put a green jersey back on and get to work,” Smart said in a statement. “I’m determined to help my teammates bring another championship to the best fans in the world.”

A news conference to announce Smart’s new contract had been scheduled for Thursday but then quickly cancelled because Smart “experienced flu-like symptoms and is currently receiving IV fluids” at a local hospital. He’s expected to give an interview via conference call “in the coming days,” the team announced.

The contract comes at a particularly timely moment for Smart, as he had reportedly received no formal offers this month at the start of restricted free agency and he had turned down a similar offer from Boston before the season began. With the move, the Celtics become more secure at the point guard position while waiting for All-Star Kyrie Irving to hit free agency next summer.

Smart, 24, averaged 10.2 points, 4.8 assists and 1.3 steals over 29.9 minutes per game last season. For his career, he’s shooting just 36 percent from the field and 29.3 from behind the arc, but team officials have been impressed with his defensive efficiency and his performance in the playoffs last season.