Former Celtic striker John Hartson believes David Turnbull could go to a top Championship side like Leeds United soon. Turnbull is currently enjoying an impressive campaign for Celtic in midfield with seven goals in 12 league appearances already. He is the second Celtic midfielder to have been linked with a move to Leeds in the last few months, with the Whites having reportedly submitted an offer of £10 million for Matt O’Riley in the summer. However, speaking on the latest episode of the Go Radio Football Show, Hartson thinks it is Turnbull who could end up moving to a side vying for promotio…