Wiseman made his Scunthorpe United debut, in the opening game of the season, in a 2–1 loss against Burton Albion. Wiseman continued to remain in the first team despite being dropped to the substitute in handful of matches, as he competed with a right-back position with Jordan Clarke. Around the same time he's competing for the right-back role, Wiseman played out in different position on two occasions. Wiseman then provided two assists in two league matches against Gillingham and Barnsley between 20 October 2015 and 31 October 2015. However, as the 2015–16 season, Wiseman suffered two injuries before one of them saw him out for the remainder of the season. Wiseman went on to finish the 2015–16 season, making twenty-nine appearance in all competition.