Then with Bayern Munich, Kroos, 30, was on the verge of joining United in 2013 but the Red Devils pulled the plug - and the Germany international then opted to joined Real 12 months later.
"Louis (van Gaal) wanted time to build his own project. I didn't hear anything from United for a while and started having doubts.
"Then the World Cup started and Carlo Ancelotti called. And that was it."