Conor McGregor apparently is pretty serious about fighting UFC vet Diego Sanchez.

The fighters recently traded barbs on Twitter, though McGregor has verbally jousted with a large portion of the UFC’s roster. So when McGregor, a featherweight, called for a fight with Sanchez, who’s considered returning to the welterweight division, it may have been easy to dismiss.

However, McGregor (14-2 MMA, 2-0 UFC), who’s competed at featherweight and lightweight, said he’d be willing to go to 170 pounds for a fight with Sanchez (24-6 MMA, 13-6 UFC), as he mentioned in the duo’s latest back-and-forth.

@DiegoSanchezUFC @AndyUFCFan My very first request was for it to be at 170lb. Ive already messaged Dana and Shelby. This fight WILL happen. — Conor McGregor (@TheNotoriousMMA) December 1, 2013

If the fight does eventually happen, Sanchez could fit in another bout before then. The fighter, who recently lost to lightweight contender Gilbert Melendez in a “Fight of the Year” candidate, is gunning for a slot on the March 15 UFC 171 event in Dallas.

McGregor, meanwhile, is recovering from surgery for a torn ACL that will likely keep him on the sidelines until mid-2014.

For more on the UFC’s upcoming schedule, stay tuned to the UFC Rumors section of the site.

(Pictured: Diego Sanchez)