The Addicks ace is believed to favour a switch to White Hart Lane ahead of Liverpool, but his arrival would leave Spurs with four top strikers pushing for just two places and Defoe would almost certainly need to leave to bolster his England prospects.
The Sun claims that Portsmouth, Aston Villa, Everton and West Ham are all monitoring the 24-year-old's situation but could be put off by a price tag in excess of £10million.
Defoe joined Spurs for £7million from the Hammers in February 2004 and has gone on to net more than 50 goals for the club, despite never holding down a regular first-team place.
Dimitar Berbatov and Robbie Keane are certain to start the new campaign leading the line for Matin Jol's men, but it remains to be seen whether Defoe will be prepared to be a bit-part player again even if a move for Bent collapses.
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