He instead joined Bundesliga side Mainz 05 on a four-year-deal, which surprised many especially after FC Tokyo's president Naoki Ogane did admit that Chelsea were the first to put a bid in for the 22-year-old.
One of the reasons for going to Germany instead was due to Mainz 05 striker Shinji Okazaki, who talked him into joining.
In a chat with UK’s Express, Muto confirmed that he felt he was not ready for the Premier League and needed to develop more as a player plus he heard Mainz was loved by their supporters.
"The Premier League is a great league, but I'm not ready to play for Chelsea yet. I don't want to hurry myself and want to develop steadily.
"I felt my decision to join this club was right. I've heard (from Okazaki) the club is loved by supporters and the team is comprised of wonderful members. He told me to give it my all,” said Muto.
"The German first division is one of the best leagues in the world. I can face remarkable players from across the globe and it will help me develop,"
"I want to perform and become a world-class player, and performing in Germany is the fastest path," he added.