The Ghanaian international put up a man of the match display at the heart of midfield in Atletico's 2-0 win at home to Getafe in La Liga on Saturday.
"I liked Thomas today. He and Rodrigo [Hernandez Cascante] were great," Simeone told reporters.
"I think he's improving, Thomas is an amazing player. He could have played for Manchester City [or] Manchester United.
"We're talking about a great player here. I rate him very highly."
The midfielder had been linked with a move to Man City ahead of the January transfer window, with Pep Guardiola believed to be in the market for a replacement for Fernandinho.
Arsenal and Paris Saint-Germain were also said to be keen on the 25-year-old, who has risen through the ranks at the capital club.
Read Full Story
Facebook
Twitter
Pinterest
Instagram
Google+
YouTube
LinkedIn
RSS