Midfielder Jayson Molumby said he was "angry and disappointed" not be selected for Republic of Ireland during the previous international window.
The West Brom player was not in Heimir Halgrimsson's squad for the opening World Cup qualifiers, a draw at home against Hungary and a 2-0 defeat away to Armenia.
Included for October's games against Portugal and Armenia, Molumby is hoping he can take his club form onto the international stage and make an impact.
"It's nice to be back, it was tough for me, I was gutted not to be selected, and it was hard to watch [the Armenia game]," he said.