The Pittsburgh Steelers took another long look at defensive end Bud Dupree on Thursday at Kentucky's Pro Day.

Coach Mike Tomlin, defensive coordinator Keith Butler and outside linebackers coach Joey Porter all attended the Wildcats’ workout and had a chance to talk to Dupree afterward.

Dupree did not run the 40-yard dash, opting to stand with the time he posted last month at the NFL scouting combine.

Dupree stood out in Indianapolis, running the 40-yard dash in 4.56 seconds and recording a vertical leap of 42 inches.

Some of his shine from the combine has faded as Dupree is not listed among ESPN analyst Mel Kiper’s top 25 players in the draft or ESPN Todd McShay’s top 32.

ESPN lists Dupree as the fourth-best outside linebacker in the draft, behind Clemson’s Vic Beasley, Washington’s Shaq Thompson, and Virginia’s Eli Harold.

Outside linebacker is shaping up as the Steelers’ biggest need with the draft six weeks away.

They signed Arthur Moats to a three-year, $7.5 million contract, Monday but lost any possibility of re-signing Jason Worilds when he opted for early retirement.

The pool of pass-rushers in free agency has thinned considerably, and the Steelers have not been involved with the upper-tier outside linebackers.

They will almost surely draft an outside linebacker within the first three rounds, and the question they have to answer about Dupree is whether he is a better athlete than football player.

The 6-foot-4, 259-pounder has good size and dropped into pass coverage at Kentucky. Dupree recorded 7 ½ sacks last season and 23 ½ for his career. But there are questions about his instincts, and whether he plays with the kind of intensity that will be demanded at the next level.

The Steelers will do plenty of homework on Dupree, and it will be interesting to see when they bring him to Pittsburgh for a pre-draft visit.