The Celtics are close to signing former Nets swingman Terrence Williams to a 10-day contract, according to an NBA source.

The deal is nearly done, according to the source, with Williams awaiting clearance from his former team before joining the Celtics in Denver for Tuesday’s game.

The former lottery pick, drafted 11th overall by the New Jersey Nets in 2009, was playing for the Guangdong Southern Tigers in China before leaving the team abruptly last week. He had also played for the Sacramento Kings and Houston Rockets.