The Celtics have signed forward Darius Miles, who missed the last two NBA seasons due to microfracture surgery on his right knee.

A former executive with the Orlando Magic, has joined the Knicks’ revamped front office and will assume a key role in rebuilding after seven straight losing seasons.

J.R. Giddens agreed to a two-year, guaranteed contract with the Celtics yesterday, with team options for another two seasons that could push the value of the deal to a little more than $5 million.