Unrestricted free agent Shawne Williams, who had his best season in New York in 2010-11, wants to return to the Knicks but the team isn’t interested, according to a source close to the versatile forward.

Several sources have told ESPNNewYork.com that the Knicks want to add a seasoned power forward, possibly to back up Stoudemire. The top candidates are Kenyon Martin and Louis Amundson, but both players want at least the mini mid-level exception of $3 million or higher. Martin played with the Clippers last season, but he will not be back because the team has 15 guys on contract, and they would have to dip into the luxury tax to sign him.

While Shawne Williams isn’t as skilled inside as Martin and Amundson, he can rebound and guard power forwards with his strength and length. He can also stretch the floor and knock down the three, a skill for which he became a fan favorite in New York. In 2010-11, in only 20 minutes of action, he averaged 7.1 points, 3.7 rebounds and nearly one block, while shooting 40.1 percent from downtown.

via Jared Zwerling of ESPN New York.com