Dundalk FC say discussions with potential investors to try and secure the future of the Irish Premier Division club are ongoing.
Armstrong, who scored 24 goals last season as the Saints secured their return to the top flight, was one of four men left out of Saturday's starting line-up - Taylor Harwood-Bellis, Joe Aribo and the injured Will Smallbone were the others - as Martin looked to end the club's search for a first point of the new campaign at the fourth attempt. The 27-year-old could return to face Everton at Goodison Park on Tuesday night (19:45 BST) and Martin is expecting a response.
The Blues welcome back Enzo Fernandez and Kiernan Dewsbury-Hall to training after illness, with injured duo Romeo Lavia and Malo Gusto also back in training.
BBC Sport has asked a number of experts to predict their Champions League winners, a surprise package and which player excites them the most.