Allan Houston attended last night’s game and was a surprise visitor to the Knicks’ morning shootaround in Greenburgh. The former Knicks shooting guard has remained noncommittal about a possible comeback. At least two NBA coaches believe that Houston is planning to play again. Houston, whose contract expires this summer, retired in October 2005 with chronic knee pain. Until then, he remains the second highest paid player in the league at $20.7 million behind Minnesota’s Kevin Garnett ($21 million).”