Sergio Romero and Micky van de Ven (Photo by Molly Darlington/Getty Images)Real Madrid have reportedly made a €100m transfer bid for Tottenham central defender Cristian Romero, according to Fichajes. Romero has shone for Tottenham, so could be a good option for Real as they continue to struggle to show their best form. Tottenham surely won’t sell Cristian Romero to Real MadridIt’s hard to imagine Spurs will want to let a key player like Romero leave the club in the middle of the season, even for such a big transfer fee. Thomas Frank’s side aren’t having the best season, so it would surely be a big mistake to let one of their most important players leave now. At the same time, however, it might be that Tottenham could do major work on rebuilding their squad if they were to bank as much as €100m from one player.