The Baggies played out a 2-2 draw with City at The Hawthorns in the third round of the FA Cup.
Saido Berahino put West Brom in the lead midway through the second half, but Jonathan Kodjia restored parity for the visitors on 74 minutes.
Kieran Agard made it 2-1 to the Championship outfit on 74 minutes, only for James Morrison to rescue the tie for the hosts in the final moments.
The draw at The Hawthorns means that the third-round tie will now go into a replay. McClean has taken to Twitter to give his reaction to the final result.
Still in the cup thats all that matters, great battling right to the very the death— James McClean (@JamesMcC14) January 9, 2016
Over the course of the 90 minutes at The Hawthorns, hosts West Brom had 52% of the possession, took 13 shots of which five were on target, and earned five corners.