Jason Roberts has questioned whether or not he has a future at Blackburn under manager Sam Allardyce. Reports have suggested Allardyce is keen to shake up his Ewood attack and £3m signing Roberts does not figure in his plans. The former Wigan and West Brom striker came off the bench to score twice in Saturday's 3-1 Premier League victory over Portsmouth, but remains unconvinced about his future under Allardyce. When asked about his future, the 31-year-old said: "I'll have to see. The manager has decisions to make about formations and personnel. "I've been here a long time and enjoyed it. Time will tell."