Benfica are in contact with Manchester City for Robinho.
The News of the World says City want a minimum £20million return on the £32.5m they paid Real Madrid for him back in August 2008 but he could be used as bait to land David Luiz.
With both Chelsea and City making bids of £27m, Robinho could hold the key to pushing through a deal in time for the start of the season because the Portuguese side want at least £35m for the Brazilian defender.
Robinho and his representatives are due to return to Manchester this week but will be kept waiting to discuss a deal because the squad is travelling to Germany to play a friendly against Borussia Dortmund.
