Saints have no interest in allowing Adams to leave because it would mean leaving themselves short in attack.
Manager Ralph Hasenhuttl said: “I have recognised it and now our players are interesting for other clubs which shows we are doing a good job.
“He is not playing at the moment that much, but he feels how important he is for this team.
“I need every player in my squad and this is what I always tell them.
“For us, there is no option because we need every player. I trust every player, and I did it also at the moment when we weren't playing so well.
“I don't want to let anybody go."