By Grey Whitebloom Real Madrid, the institution that has had two separate eras of ‘Galacticos’, are indelibly linked to big-money signings. No club has broken the world transfer record more often than the Spanish giants but this current iteration of Madrid has been more savvy than flashy in recent windows. Carlo Ancelotti’s two first-choice centre-backs at the start of the season, Antonio Rudiger and David Alaba, both arrived on free transfers. As players across the globe enter the final six months of their contracts, Madrid – and any other thrifty suitors – are legally allowed to negotiate a …