FC Porto left-back Aly Cissokho is set to make a decision on his future at the end of the season after claiming Tottenham Hotspur are interested in him.
The 21-year-old France-born defender could sign an extension to his current deal with the Portuguese giants but is also attracting other clubs.
''I have a contract until 2012 and the club officials want me to add another year to that,'' he told sky sports. ''That shows they have trust in me and I am proud of that.
''I also know there are big clubs looking at me, and Tottenham is one of them and that is fine. I will talk with my club and we will see what happens from there.
''We will just wait until the end of the season and then see.''
Redknapp is set to add two or three players in the summer and allow some players to leave. Midfielder Adel Taarabt expects to be one departure.
Taarabt, who has just returned from a loan spell at QPR, told mountakhab.net: ''I'm going to leave Tottenham during the summer no matter what. They can't give me what I want, so my departure is inevitable.
''I need time on the pitch. At my age I can't wait any longer - I just want to play - and that is why I agreed to join QPR in March.
''They want to buy me, and have made Spurs an offer for me. My agent has a meeting with Spurs' management in a week's time.
''Several English and French clubs are after me, as well as others in Spain and Germany. I will make a decision once I see what offers I've got.''
Dorian Dervite, who is on loan at Southend, may also leave.
''Possibly it is a case where we have to sell before we can buy,'' Redknapp told the Evening Standard. ''We will have to shift around a bit if we want to bring anyone in.
''We spent money in January but I think we are a couple of players away from getting a team to push the top four.''