IRVING, Texas -- After working out four veteran wide receivers Tuesday in their search to make up for the impending absence of Dez Bryant, the Dallas Cowboys acquired Brice Butler in a trade with the Oakland Raiders for a conditional pick in 2016.

The Cowboys worked out Hakeem Nicks, Austin Pettis, Nick Toon and Clyde Gates at Valley Ranch and were impressed with Toon and Gates but opted to do the trade for Butler, who caught 15 passes for 175 yards and a touchdown in the preseason.

He was inactive for the Raiders' Week 1 loss to the Cincinnati Bengals.

A seventh-round pick in 2013, Butler has 30 catches for 383 yards and two touchdowns in his first two seasons.

A seventh-round pick in 2013, Brice Butler has 30 catches for 383 yards and two touchdowns in his first two seasons. Ezra Shaw/Getty Images

If Butler is on the 53-man roster for six games, the Cowboys will give up their fifth-round pick in 2016 but get the Raiders' sixth-round pick in return. With their bye week, the Cowboys have seven weeks to make a judgment on whether to keep him or not.

Dallas gave up its sixth-rounder in 2016 to take tight end Geoff Swaim in the seventh round of this year's draft. Last week, the Cowboys gave up their seventh-rounder in a conditional trade with the Seattle Seahawks for running back Christine Michael.

Butler is expected at Valley Ranch for Wednesday's practice and is unlikely to be active for Sunday's game against the Philadelphia Eagles as he learns the offense.

"We do believe we have a player-friendly system where players can learn quickly," coach Jason Garrett said Monday. "That's a big part of the NFL these days, is you want to be able to have a guy -- a young player, maybe a guy you drafted, maybe a guy you signed as a college free agent or a veteran player you're bringing in who has no history with you -- you want them to be able to come in and learn, and learn quickly. That's our job as coaches: to get these guys up to snuff and get them to play as quickly as possible."

The Cowboys are hoping for a quick return for Bryant, but speaking on 105.3 The Fan in Dallas on Tuesday, owner and general manager Jerry Jones would not put a definitive timetable on Bryant's return. At the quick end, he could be back for Dallas' Oct. 25 game against the New York Giants, but it's possible he could need more time, with a potential return Nov. 1 against the Seahawks or Nov. 8 against the Eagles.