Either Amir Khan is getting desperate or he’s truly the sort of “I’ll fight anybody” boxer the fans crave and the sport needs.

Already a back-up consideration for Manny Pacquiao should negotiations fail for a May 2 bout with Floyd Mayweather Jr., the 28-year-old Khan (30-3, 19 knockouts) used his Twitter account to call out Mayweather, Pacquiao, Miguel Cotto, Tim Bradley and Juan Manuel Marquez, in that order.

“Mayweather, Pacquiao, Cotto, Bradley, Marquez all available to fight around May,” Khan wrote. “I’m ready and want to fight the best #LetsMakeItHappen.”

Khan had even more to say about Cotto, who earned THE RING middleweight championship – as well as a fourth title in as many divisions – with his 10th round stoppage victory over Sergio Martinez in June.

“Khan v @RealMiguelCotto. I’d take that fight in a heartbeat at catch weight 155lbs for the @WBCBoxing Middleweight title,” said Khan. “Stylistically, Cotto would be a great fight for me. He’s a great champion. Just imagine that fight in UK.”

A former junior welterweight titleholder who has fought his past two bouts as a welterweight, Khan has turned in consecutive near-shutout victories over left-handed former titleholders Luis Collazo and Devon Alexander in May and December, respectively. Khan has now won four consecutive fights since he was stopped by current RING 140-pound champion Danny Garcia in 2012.

Khan’s resume includes a unanimous decision over Marco Maidana in December 2010, as well as a technical decision victory over Mexican great Marco Antonio Barrera, a TKO over two-division titlewinner Paulie Malignaggi and a decision over Andriy Kotelnik, an ex-beltholder.

Khan also has unanimously decisioned former beltholder Julio Diaz and knocked out ex-titleholder Zab Judah. After defeating Judah, Khan lost his next fight by disputed split decision to current IBF 140-pound beltholder Lamont Peterson in December 2011 before falling to Garcia.