Osagepamwen is a central midfielder apparently and Kalu a striker.
They are both 17 and have agreed to train with the youth team and sign professional deals when they turn 18 this year.
"We sent out four of them for trials with Man United and they drafted two out of the four into their youth team," agent Dominic Egbukwu told Tidesports.
"They are Okoro Osagepamwen of Bayelsa United and Kelechi Kalu (Dominion FC).
"They will be with the youth team until they turn 18 and sign professional deals."