Browns place OL Brian Allen on IR, ending his season

(Photo credit: Mark J. Rebilas-USA TODAY Sports)

The Cleveland Browns placed new acquisition Brian Allen (calf) on injured reserve on Monday, ending the center's season.

Allen, 28, who signed with the Browns in May, suffered a calf injury on the third day of training camp.

The Browns announced the signing of guard Zack Johnson in a corresponding move.

Allen was drafted in the fourth round by the Los Angeles Rams in 201