Chelsea have joined the race to sign Glen Johnson after tabling an £18million offer for the Portsmouth and England defender.
The 24-year-old right-back was believed to be close to joining Liverpool after they made their interest known at the beginning of the week.
However, Pompey executive chairman Peter Storrie has now revealed that Chelsea have also made an offer for a player they sold for just £4million two years ago.
Johnson left Stamford Bridge after three frustrating seasons on the fringes of the first team but has seen his club and international career blossom at Fratton Park.
"The matter will come to a conclusion at the beginning of next week. I do not have a preference over the move, it is up to Glen," said Storrie.
"The deals are almost identical so it really is down to him and what club he prefers - which one is going to pay him more money.
"Glen wants to play regularly in the Champions League, he has got himself back in the England side so I understand that. Sometimes you have to be fair to players."
Chelsea's interest casts further doubt on the future of current right-back Jose Bosingwa.
The Portugal international has already been targeted by Bayern Munich and could now be on his way out of Stamford Bridge after just one season in the Premier League.