Amir Khan appears poised to announce a fight against former WBC lightweight champion Adrien Broner.
American Broner, 25, tweeted a video of himself speaking to Khan on the phone, followed by the hashtag #BronerVSKhan.
Bolton fighter Khan, 28, has not fought since beating Devon Alexander in December, and is expected to return to the ring in May.
Broner's only defeat in 31 professional contests came against Marcos Maidana, a man Khan beat on points in 2010.
Should he win any potential fight with Broner, Britain's Khan will then target a bout with the winner of the Floyd Mayweather v Manny Pacquiao contest on 2 May.
Kell Brook also appears to be a future opponent after Khan said he would accept the challenge to a fight from his British welterweight rival at Wembley "within the next 12 months".