Sporting winger Geovany Quenda is expected to stay at Chelsea until the March international break as he continues his recovery from a metatarsal injury.
The 18-year-old agreed to join Chelsea in a £40m deal last year but only after completing another full season with the Portuguese giants.
Quenda remains focused on ending the season strongly at Sporting as they battle Porto for the league title, while a positive final few months would also strengthen his hopes of making Portugal's World Cup squad.
However, his use of Chelsea's worldu2011class medical facilities is helping him adapt early to a move to a new country.