Thiago Silva was Tuchel's captain at Paris Saint Germain before he left as a free agent for Chelsea last summer. The veteran defender has enjoyed an impressive first season in England, though has suffered an interruption due to injury.
"He was my captain and was super reliable. He's one of the best players and has a great personality.
"We had a connection very quickly in Paris, and finding him here was a pleasure."
Dismissal at home to West Brom eventually saw Thiago Silva's teammates thumped 5-2 by the relegation-threatened Baggies.
- updated April 5