Kentucky center Daniel Orton has cancelled several workouts in the final days before Thursday's NBA Draft, which has raised some red flags.

Orton tentatively planned a visit with the Pacers on Tuesday.

A number of league executives say Orton has been out of shape and dealing with knee issues during the pre-draft workout process.

He doesn't have formal representation either.

"There are too many red flags right now," an Eastern Conference executive told Adrian Wojnarowski of Yahoo! Sports.