Kubrat Pulev startled Frank Mir with a big right hand before the former UFC champion was rescued by the referee in the first round of their Triad Combat Rules fight.
Pulev was returning to action for the first time since he was stopped in the ninth round by Anthony Joshua in their world heavyweight title fight last December.
But Pulev’s superior punching was quickly on show as a single straight right left Mir unable to continue in the closing seconds of the opening round.
“We’ve been getting a lot of offers. Joe Joyce is looking for us,” Gotzev told Sky Sports.
“Kubrat is definitely not a stepping stone for no-one, so we’re going to pick and choose our battles, and get him back to where he feels great.
“It’s all about how he wants to enter the ring and how long he wants to keep going for.”