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The midfielder has been linked with a move to the Gunners this summer.
Arsene Wenger is keen to splash the cash and mount a Premier League title charge next season.
The Gunners have already spent big on Alexandre Lacazette, with the Lyon hitman moving to the Emirates for £52m.
And BetStars say Arsenal are likely to make Brozovic their next big signing this summer.
BetStars Director of Trading Ian Marmion said: “Arsenal have already bolstered their attacking options with the acquisition of Alexandre Lacazette.
“And the odds suggest they could soon be adding another midfielder during this window.
“The Gunners are now odds-on at 7/10 to complete the signing of Croatian midfielder Marcelo Brozovic from Inter Milan.
“As Alex Oxlade-Chamberlain looks to be heading for the exit door Brozovic could represent a great replacement, if not an upgrade, given his ability to play multiple midfield positions.
“We’re calling it, expect to see Brozovic in an Arsenal shirt sooner rather than later.”