The Raiders placed O'Leary on the Reserve/Non-Football Illness list on Thursday, Scott Bair of NBC Sports Bay Area reports.

EDGE Analysis

O'Leary joined Las Vegas in March after having logged 13 catches for 109 yards and one touchdown between 12 total games with the Dolphins and Jaguars last season. Due to his placement on the reserve/NFI list, O'Leary won't count against the Raiders' 90-man offseason roster. The team re-signed tight end Paul Butler to fill O'Leary's depth gig.