The British middleweight contender returns to SSE Arena in Wembley on Saturday and the victory would keep Eubank Jr on track for a WBA title this year.
His new opponent, Muratov, is ranked No.7 by the WBA after winning 24 of his 27 fights, racking up 17 knockouts in that span and losing just twice.
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Eubank Jr says he’s more motivated than ever to achieve his world title ambitions after seeing his friend Anthony Joshua lose his belts in Saturday’s unanimous loss to Oleksandr Usyk.
“Absolutely, I’m excited,” said Eubank Jr, who joined the Air sports team at Tottenham Hotspur Stadium.
“Obviously, Anthony Joshua is a friend of mine. I’m a little disappointed that he lost, but that’s part of the game. We’ve all been there.
“On the contrary, it makes me want to fight even harder. I know the feelings he’s feeling now.
“The first thing you want to do is get back in the ring and win. We’re going to put on a hell of a show. “
Eubank Jr produced a dominant points win over Marcus Morrison, in his first bout with new coach Roy Jones Jr in May.
The 32-year-old says he has resisted the urge to request an early stop, but plans to unleash his ruthless instincts this weekend.
“I can be whatever I want to be,” Eubank Jr told Sky Sports. “It all depends on what I’m trying to accomplish on a given night.
“That night I wanted to do 10 laps. I wanted to experience what it was like to have Roy Jones in my corner, listen to his instructions, and get rid of some of that ring rust.
“I had been out of the ring for a long, long time.
“Could I have stopped the fight sooner?” Yes, but that was not my goal.
“That’s not how it’s always going to be. The fighters must understand that this was an abnormal event. Most of the time, if I see an opportunity, I will take it. You’ll go.
“On this occasion, it was not the case, but during my next performance, I will look for the stop earlier. “
Chris Eubank Jr returns Saturday night, live on Sky Sports.