Nicolas Batum stopped a recent workout with the Toronto Raptors earlier this week after after a stress echo test came back in the "borderline" area, ESPN's Chad Ford is reporting.

The echo test, according to Ford, measures the health of the heart.

"There is an issue with Batum, and nothing is clear," his agent Bouna Ndiaye told ESPN.com on Friday afternoon. "The number [the score on his stress echo test] could be a borderline problem if he had a family history of heart problems. But I talked to Nicolas's mother, and she said his father didn't die of a heart problem. His team in France and the French national team test him regularly and said they've never seen any indication that he had a heart issue."

A Sports Illustrated report in February said that Batum's father Henry suffered a "massive heart attack" and died at the free throw line while playing pro basketball in France when Nicolas was 2 years old. According to Ndiaye, Batum's father died of an aneurysm, not a heart attack.

Click here to read RealGM's Draft Report on Batum