By Daniel Orme Matthijs de Ligt’s future at Bayern Munich is back in doubt – putting Manchester United back on red alert. The Dutch defender only joined Bayern in 2022 but has long been admired by some at Old Trafford, most notably Erik ten Hag with whom he shone at former club Ajax. As Ten Hag looks towards further strengthening his squad this summer, developments in Bavaria could see growing interest from both parties when it comes to a reunion. De Ligt has fallen down the pecking order at Bayern under Thomas Tuchel this term, with Dayot Upamecano and Kim Min-Jae preferred. There were report…