When Onana was brought in, neither Bogarde nor Barrenechea looked like reliable CMF. Now, both would probably be a better partner to Kamara. If we could get the money back on Onana to support the reinforcement of other areas in the squad I'd do it ... but it probably won't happen (who would pay 50m for Onana, and would Emery want to get rid?), and - anyway - he still has plenty of scope for improvement.