Former Chelsea midfielder, John Mikel Obi has claimed former Super Eagles head coach Sunday Oliseh was one of the worst coaches he worked with during his career. Oliseh was appointed as Nigeria’s national team boss in 2016. However, he was sacked just months into his stay. His time in charge was filled with controversy, as he clashed with the number one goalkeeper at the time, Vincent Enyeama, who eventually retired abruptly. Mikel Obi, speaking on his ObiOne podcast, recounted how Oliseh caused upheaval in the Eagles’ camp on his first day. He said: “I remember the first day he came into the …