"I text him quite a bit and call often," Martin said Tuesday. "He's traveling a lot of places doing skill work."
Hopson, along with UT freshman Tobias Harris, is expected to test the NBA draft waters.
"I'm still exploring my options,'' Hopson sent via text to the News Sentinel on Tuesday.
The Vols are in their second week of individual workouts with Martin and his staff.
Harris, a Freshman All-American power forward, has attended all of the workouts.
Harris and Hopson will get evaluations on their draft stock before deciding by May 7 if they will return for another season at UT.
The players are eligible to return if they do not sign with agents.
UT has nine players on scholarship, counting Hopson and Harris.
Martin said the Vols won't have 13 scholarship players at the end of the spring signing period regardless of the status of Hopson and Harris.
The spring national signing period starts Wednesday and runs through May 18.