Southampton CEO Phil Parsons on 12th May 2024 said when interviewed by the BBC...
"We do want to expand St Mary’s, eventually. We've already got plans in place to do that."
https://www.bbc.co.uk/sounds/play/p0hxl2gt
Things get lost in the huge transfer thread. A thread each for any half decent rumour means all discussion and links for that player is easy to find in one place.