I run Jadson from Shakhtar Donetsk as a MC advanced playmaker with PSG, hes 26 but hes amazing technically, even if his mental leaves a lot to be desired. May not be good enough for United but just thought id throw him out there.
Hazard to replace Giggs is an easy one because Hazard is amazing. but if you want someone less well known Adam Hlousek from Slavia Prague always performs pretty well in my Liverpool save, but he was at Benfica in 2013 when i bought him so i have no idea what he starts at.