• Portuguese manager is unsure of his job• Villas-Boas says West Brom were 'far superior'André Villas-Boas admitted he is unsure if he will still be in charge when Chelsea travel Birmingham City in the FA Cup on Tuesday following his side's 1-0 defeat at West Bromwich Albion.After a poor defensive display and Gareth McAuley's 82nd-minute winner, which meant Chelsea have won once in their past seven Premier League matches, Villas-Boas was asked if he will still be the manager in two days time. He said: "You will have to ask the owner."Neither Roman Abramovich nor any of his executives at Chelsea have publicly backed Villas-Boas. But the manage...