O'Neill is expected to name an extended provisional panel for the two-leg tie, with some media speculation that in-form Brentford midfielder Alan Judge will be handed a call-up after a series of impressive performances in the Championship.
Tipperary's Shane Long is also set to be included in the squad after Southampton confirmed over the weekend that the Gortnahoe striker is expected to return to first-team action shortly after his ankle injury.
The main concern will be over the fitness of defender John O'Shea, who suffered a suspected hamstring strain during Sunderland's derby win over Newcastle last Sunday.
