Roy Carroll hopes his Northern Ireland goalkeeping rival Lee Camp will make himself available again soon.
Nottingham Forest's Camp pulled out of Michael O'Neill's squad midway through last month's World Cup qualifying double-header against Russia and Luxembourg citing personal reasons.
Camp had just been dropped for the returning Carroll - something the Olympiakos keeper knows all about after having a lengthy battle with Maik Taylor for the gloves himself.
And the 35-year-old, who is back in the fold after a six-year absence, would welcome Camp back into the squad.
Asked for his views on Camp's absence for the match against Portugal on Tuesday night, Carroll said: "I don't know how long he is going to take a break for and I hope he comes back as soon as possible.
"I liked the fight for number one. Me and Maik Taylor did it for a number of years and I think we liked the competition.
"I have been in two squads with Lee before and he is a quality keeper. He spoke to me and said he had to go home, because he has family things to see to, and said he was sorry to go.
"I said he should sort himself out, but he should come back as soon as he can.
"He is a good lad, is still young as a goalkeeper. I know what it is like, I was out for six years so I told him he can't leave it as long as I did, he has to come back as soon as possible and get more caps."