Celtic have secured one signing on Wednesday but Brendan Rodgers is now facing a transfer problem ahead of Friday’s deadline. The Bhoys have lost a huge player in recent days with attacking midfielder Matt O’Riley joining Brighton and Hove Albion. Celtic have though been able to complete the signing of a new left back to compete with Greg Taylor. Barcelona’s Alex Valle has completed a loan move to Parkhead after finalising the formalities of the deal on Tuesday. Celtic aren’t finished there though and still want more signings – but one target is looking unlikely to arrive before Friday’s trans…