Newcastle United fans are waiting nervously to see if anyone activates Bruno Guimaraes’ release clause. It is make or break time for Bruno Guimaraes at Newcastle United this summer, with suitors having a window of opportunity to sign him for £100million. His release clause is only available for a limited period of time, which could help the Magpies keep the 26-year-old at St James’ Park. He is certainly a man in demand, and it is no surprise after the season he just had. During a difficult year for Newcastle, Bruno was absolutely outstanding. That is why Arsenal and Manchester City are interes…