Republic of Ireland boss Martin O'Neill has revealed that Seamus Coleman suffered a stress fracture in his foot during the 4-1 defeat to Wales on Thursday.
The Everton defender stayed with the squad for the 1-1 draw in Poland despite a scan revealing the extent of the damage to his foot.
Coleman spent 10 months on the sidelines after suffering a serious double leg fracture against the Dragons in March 2017.
O'Neill told RTE Sport: "Seamus went for a scan. He has a little stress fracture, which is a concern. He could easily have got a flight home, but he stayed with the team.
"He is a great captain, a really great captain. He is inspirational and obviously we hope he is back in time for the games coming up."