Red Bulls' Mike Grella to miss rest of season with knee injury

HARRISON, N.J. -- New York Red Bulls midfielder Mike Grella will miss the rest of the 2017 season with a knee injury.

The MLS team announced on Thursday that Grella will undergo surgery next week for discomfort in his left knee. He has been limited to playing in eight games this season because of the injury.

The 30-year-old Grella has made 73 regular-season appearances, scoring 16 goals and 13 assists since signing early in 2015.

Also on Thursday, the Red Bulls announced a new contract for midfielder Felipe, without disclosing details

"Felipe has proved to be a key player for our club over the past two and a half seasons," Red Bulls sporting director Denis Hamlett said. "He continues to grow as a player and we are excited to keep him as part of our team."

Felipe, 26, is in third season with the Red Bulls, who acquired him from Montreal in a trade before the 2015 season. He scored five goals last season.

The move comes one day after the Red Bulls also signed goalkeeper Luis Robles to a new contract.