Crewe Alexandra have snapped up Arsenal defender Ryan Alebiosu.
Right-back Alebiosu, 20, has joined on loan from Arsenal until the end of the season.
Alebiosu, who made the Arsenal bench for last weekend's Premier League match with Burnley, is free to face promotion chasing Rotherham United on Saturday, but it is not yet clear whether Uwakwe and Agyei have signed in time to feature.
Crewe were unsuccessful in a move to complete the signing of former Liverpool trainee Yan Dhanda from Swansea City.