Patrick Ewing talks to Knicks before preseason opener

WASHINGTON — When the Knicks got off the bus and walked through the doors of the visitors locker room at Capital One Arena Monday morning expecting the room to be set up for a film session, instead found a visitor awaiting them.

Ready to address them before their first preseason game was the head coach of Georgetown University, better known as one of the greatest Knicks of all-time, Patrick Ewing.

Ewing, who was the leader of the last great era of Knicks basketball, a center who dominates the franchise’s all-time leader board, has found himself on outside looking in since he retired in 2003. While he served as an assistant coach for 13 seasons in the NBA with three different organizations he…