EXCLUSIVE

Some NBA movin' and shakin' in Bev Hills Friday -- with Toronto Raptors head coach Dwane Casey meeting with 7'1" Meyers Leonard ... and TMZ Sports has the pic.

Leonard was a 1st round pick by the Portland Trailblazers in the 2012 Draft -- and has been a solid player. But now he's a restricted free agent and looking for a payday.

Enter the Raptors ... they could be looking to replace free agent center Bismack Biyombo -- who could bolt Toronto to chase bigger money in the free agent sweepstakes.