COVENTRY City remain in talks with Sheffield United over the signing of former midfielder Gustavo Hamer but a ‘gap in valuation exists’. Hamer featured for Sheffield United in the club’s pre-season friendly against VfL Bochum at the weekend which ended in a goalless draw. Talks between the two clubs over the transfer of Hamer began last week. “You’ve seen his actions, you’ve seen his attitude towards the game. “But as far as I’m concerned, he’s a Sheffield United player.”