Former English champion Blackwell was originally planning a holiday in Greece, but said: "I had a feeling something was going to come up and that's why I decided not to go on holiday.
"I stayed in the gym, kept myself fit over the summer and I didn't think twice when this chance came along."
Blackwell had been named to meet Chris Eubank jnr in a final eliminator for the British title, but according to manager PJ Rowson: "It became apparent Eubank jnr doesn't want to step up to this level just yet."
Droylsden's former British light middleweight champion Prince Arron was unsuccessful against Bursak in Monaco two months ago, when he challenged for the EBU title. The Ukrainian has been beaten just once in his 29-fight career - by Hassan N'Dam N'Jikam for the interim WBO title.
Blackwell has watched footage of the Arron fight and has been working on a game plan to beat Bursak.
"His style will suit me," said Blackwell, who sparred '70-80' rounds with Carl Froch before his win over Mikkel Kessler in May, and plans to spar Russian middleweight wrecking machine Gennady Golovkin later this year.
"He will come forward, he's not going to be on his toes moving in and out. He isn't the best boxer and he isn't the fastest either. He tries to wear you down, then pick his shots.
"I'm fighting in his backyard, so I might have to stop him. We've been working on setting a high pace, throwing punches in bunches and picking off the big shots."
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