“I am here because I care about this club and I thought it was only right to physically answer your questions here today before I leave.”
Rosenior said Strasbourg first-team coach Kalifa Cissé, assistant head coach Justin Walker and head of analysis Ben Warner would join him at Chelsea.
Ronseior joined Strasbourg in July 2024 and guided the French club to seventh place in Ligue 1 last season, securing European football for the first time in eight years.
Their last match was a 1-1 draw at Nice on Saturday, their fifth league game without a win.
They are seventh in Ligue 1 and first in the Conference League.
“The last 18 months have been a joy and the best of my professional career,” Ronseior said.
“I will love this club for the rest of my life but I can’t turn down Chelsea.”
