http://news.bbc.co.uk/sport1/hi/football/teams/s/sunderland/9364092.stm
Sunderland striker Darren Bent makes transfer request
Bent moved to Sunderland from Tottenham
Sunderland have confirmed that Darren Bent has handed in a written transfer request amid reports linking the striker with Aston Villa.
Reports suggest Premier League strugglers Villa have lodged an £18m bid for the England international.
The Midlands club would not confirm or deny the speculation.
Bent, 26, joined the Black Cats for an initial £10m from Tottenham in August 2009 when he signed a four-year deal with the north-east club.
The forward's desire to leave Sunderland will come as a shock to the club's fans and, if he does exit the club, it will leave a big void for Black Cats boss Steve Bruce to fill.
Bent, who started his career at Ipswich before spells at Charlton and Spurs, scored 25 times last season and has notched 11 goals so far in the current campaign.
606: DEBATE
First Reaction: Gutted. Second Thoughts: £18m + for a clearly unhappy player struggling to reclaim his form - good business.
SwanseaMackem
He has contributed more than a third of Sunderland's 26 goals in the Premier League this season, with his total of eight helping the club to sixth place in the table.
Although Bent missed out on selection for the 2010 World Cup last summer, he did grab his first international goal in September when he scored after coming on as a substitute in a 3-1 win over Switzerland.
Aston Villa, who are owned by American Randy Lerner, are fourth from bottom in the league as they try to move away from the relegation zone.
A deal for Bent, which would break the club's transfer record, would be a show of support in manager Gerard Houllier, despite Villa's struggle for form since the Frenchman took over in September.
BBC Radio 5 live football correspondent Ian Dennis said he understood that the offer from Villa was put forward towards the end of last week.
"I understand it was cash up front which is an enormous show of faith by Randy Lerner in Gerard Houllier," he said.
i've wanted him for years! Why the fuck can't we go for him too?