Head coach Jon Gruden reportedly "really wants him" and is hoping to up the offer, per Lammey, although the front office is apparently holding back. There are two or three teams with better offers at the moment.
Clowney remains a free agent despite earning three Pro Bowl selections in the last four years. He is coming off a disappointing 2019 season with the Seattle Seahawks, totaling just three sacks in 13 games while dealing with a core muscle injury.
The 27-year-old underwent core muscle surgery in the offseason and said he was healthy in May.
"I just want to let people know I'm ready," Clowney told Mark Berman of Fox 26 in Houston (via Curtis Crabtree of Pro Football Talk). "I'll be ready to go whenever the time comes. Whoever I sign with will get the best version of me."
At his best, the 6'5", 255-pound defensive end is an impact player against both the run and the pass. He totaled 18.5 sacks in 2017-18 combined, adding 106 tackles and 42 quarterback hits.
He would be a key addition to a Raiders team that finished 24th in the NFL in points allowed, including 25th against the pass. The squad was tied for 24th with 32 sacks on the year, led by rookie Maxx Crosby with 10.
Adding Clowney could give the franchise its most dangerous front-seven player since trading away Khalil Mack ahead of the 2018 season.
There should still be competition for his services, with the Seahawks and Tennessee Titans reportedly making multiple offers, as Dianna Russini of ESPN reported in May. ESPN's Adam Schefter reported the Cleveland Browns were the "most aggressive" team with the "richest offer," via ESPN's Jake Trotter.
Clowney has been patient with his decision, but Las Vegas clearly remains in the hunt.