After the signing of Kieran Trippier, Atletico Madrid's summer transfer window expenditure crosses £170m.
The central defender has agreed a five-year contract and his arrival comes just a day after Atletico completed the signing of England worldwide right-back Kieran Trippier from Tottenham Hotspur for a fee of 20 million euros.
The 24-year-old footballer has played for Real Madrid and will be fill the position of Uruguayan footballer Diego Godin for defense. "Diego has been an emblem within the club", said Hermoso.
"It's a great opportunity to come and live in Madrid".
'This is an fantastic feeling - I've always wanted to play overseas and what a place to play, in Madrid, ' Trippier said upon his unveiling.
An agreement has been found, though, and Hermoso is the latest defender to join Atletico after Felipe, Renan Lodi and Kieran Trippier, who arrived a day earlier.
"He is for me one of the best managers in the world, so it is a privilege to play for him and give everything I can for him".
Trippier added of his decision to leave England: "I've always wanted to play overseas, especially LaLiga, since I was young and I've got a great opportunity now and it's one that I'm going to really enjoy and give my all".
"My main priority is to learn the language straight away, to make it easier for my family and just enjoy playing for Atletico and living in Madrid".