AP

Colts tight end Coby Fleener is sidelined after suffering a concussion.

The Colts have confirmed that Fleener is going through the NFL’s concussion protocol.

With Fleener out and Dwayne Allen missing a few weeks because of a foot injury, the Colts are missing their top two tight ends at the moment. Dominique Jones and Justice Cunningham are working with the first-string offense while Fleener and Allen are out.

A second-round pick out of Stanford last year, Fleener started 10 games as a rookie and caught 26 passes for 281 yards.