Gonzalo Veron isn’t sitting around these days. He is training with the Red Bulls. (FrontRowSoccer.com Photo)

Red Bulls forward Gonzalo Veron and midfielder Mike Grella returned to training with the Red Bulls Tuesday.

Veron, who has been hampered with a hamstring injury he incurred during the CONCACAF Champions League quarterfinal series with the Vancouver Whitecaps.

Red Bulls head coach Jesse Marsch said he will be cautious about the Argentine winger and when he will get some minutes in a Major League Soccer match.

Grella was “close to be fit,” Marsch said, who added the coaching staff will monitor the Glen Cove, N.Y. native on a daily basis so it can escalate his training.

Panama international defender Michael Amir Murillo, who did not earn a spot on the 18-man roster vs. D.C. United last Saturday after he had a “weird cramp,” during the Red Bull II’s USL encounter Friday night, according to Marsch.

“It wasn’t anything that anyone was overly concerned about,” Marsch said.

The Red Bulls host the Columbus Crew at Red Bull Arena Saturday at 7 p.m.