The 23-year-old was deployed as a left-back as the Saints' poor run of form continued on the final day after being demolished at King Power Stadium.
Southampton boss Ralph Hasenhuttl says he was left with no option than to play the Ghanaian out of position following injuries to Tino Livramento and Romain Perraud
“We have to take risks at 2-0 down. You open everything going on for an equaliser and it is normal that you try, but then we go and concede a third goal [straight after the penalty],” Hasenhuttl told the media during his post-match press conference.
“Sali [Salisu] is tucked inside, he is a centre-back, but we have no other options at the moment at full-back. This was his first time playing there and he did okay, but we know that we have problems in this position.
“We didn’t want to be as passive like against Liverpool. We wanted to show up. We did okay in the first half with the pressing, the way we played was okay, but there are still issues with our defending in some moments, which has not been good enough.”