London rapper Aggro Santos is the second artist to join Barlow's label after he signed classical singer Camilla Kerslake last year.
Santos confirmed the news to the Daily Star, suggesting: "I should write his vocal and he should write my rap and see what comes up."
Asked whether he would feature on the new Take That album, he replied: "I'd love to get on it. Gary's a fan of mine and I'm equally respectful of his writing."
Santos releases new single 'Candy', which features ex-Pussycat Doll Kimberly Wyatt, on May 3.