He made an increased number of appearances for Hull City in 2005–06, but then spent the first half of the 2006–07 season on loan to Rotherham United. Wiseman made his Rotherham United debut, in the opening game of the season, coming on as a substitute in the second half, in a 1–0 loss against Brighton & Hove Albion. Wiseman scored his first senior goal, in a match against Leyton Orient on 23 September 2006. After making eighteen appearance for the club, where Wiseman was featured in the first team regularly, his loan spell at Rotherham United came to an end in February 2007.