Ralph Hasenhüttl has confirmed that the midweek FA Cup replay against Derby has come too soon for injured trio Danny Ings, Mario Lemina and Ryan Bertrand - but any number of those three could be in contention for the weekend's Premier League action.
Saints face back-to-back home ties - Everton the visitors on Saturday - where the manager will be able to utilise the services of Pierre-Emile Højbjerg, who will have overcome his suspension, as well as the possibility of fielding striker Ings.
Full-back Bertrand is being eased back to full training, and could be ready for competitive action soon, while Michael Obafemi remains sidelined.
"We have to find the right mixture. We will continue to try and give the young guys chances in the future," the Austrian commented.
"Callum Slattery is an option, absolutely. We have to look at what shape we're playing.
"We have three suspended players, who will miss Wednesday but will be available for the weekend.
"Injured players are coming back piece by piece. Bertrand is training with the team, Ings will hopefully return to training tomorrow and Lemina was in the group today.
"Obafemi will take a few weeks more to recover. His injury is more difficult."