Today's friendly represents a homecoming for Cork, who played 23 league games for Southampton during the first half of the 2008-09 season.
Cork, 21, has 12 caps at this level and spent the last 18 months at Burnley. But he claims it was his time with Saints which helped to kick-start his career.
Cork, who is the son of former Wimbledon and Sheffield United striker Alan, told the Daily Star Sunday: "I enjoyed playing at Southampton but it didn't work out because at the end of the season they went down.
"But it's a great club and they have had a good season this year with Nigel Adkins.
"I'm really pleased for them getting promotion back to the Championship.
"It's a massive stadium. The last game we played there, we had about 30,000.
"It'll be a good for us to have a lot of support behind us to give us a send-off before we go away to Denmark."