Real Madrid defender Jesus Vallejo says he values his time last season in Germany.
Vallejo had a successful year with Eintracht Frankfurt before returning to Madrid this season.
“Eintracht got in touch with Madrid and the club recommended that I go to Germany," said the youngster.
"It took me by surprise, but if Madrid thought it was best for me to go to continue my development, then that was fine. You go on your own and it really helps you to mature. I thought I'd find it more difficult but I made good friendships, especially with the Spanish speakers."