article_snippet.sent: Jermain Defoe, who has scored twice since his return to England, trains with team-mates on Friday .
article_snippet.sent: If I didn’t think I could do it then I would have said “no”,’ said the 67-year-old, who has never been relegated, as a player or manager.
article_snippet.sent: Gabriel Obertan (left) closes in on Mehdi Abeid during Friday's training session at St James' Park .
article_snippet.sent: Tim Krul works on Tim Krul handling as Tim Krul prepares to keep Sunderland out in the Tyne-Weir derby on Sunday .