Fatai Osho was left disappointed after Enyimba settled for a draw against Akwa United in the midweek.
Austin Oladapo gave Enyimba the lead in the 54th minute but Akwa United drew level in the stoppage time thanks to David Philip to force a 1-1 draw. The hosts were second best most of the game but Osho insisted his side had no reason to concede late.
"Very painful one, the way, and manner we conceded that goal is quite demoralizing. I see no reason why we have to concede at that time," he said after the match.
"I have to look more into that if is fatigue or whatever, but to me, I know they did not play to their potential, they looked sluggish," he explained.
"We need to rest some players, it is quite important and you can see that Nelson that started the first half could not continue, he suffered a hamstring and we had to take him out, maybe we have to do a little bit of rotation also. They have been playing too many matches lately. It is so clear that they looked a bit tired."
The Peoples' Elephant who are currently third on the log with 22 points after 10 matches will travel to face Jigawa Golden Stars in their next NPFL tie.
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