On his Twitter account the rapper blasted The X Factor winner's new single 'Start Without You' and offered to write her a "better" track.
"Did Simon Cowell actually approve this new Alexandra Burke song?" he wrote. "She’s a gorgeous talented girl and deserves better material."
He continued: "Seriously Simon I’ll write a better song than that - call me. I mean it's catchy. But so was the song for Kia-Ora."
Faced with an angry response from the ''All Night Long'' singer's fans, he responded: "Look if I'm offending you just stop following me. I'm only saying what we're all thinking - Alexandra deserves better."
Burke recently confirmed that the single's release date had been pushed back to September 5.
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