Paris Saint-Germain have told Chelsea that their initial offer for David Luiz is not enough and are demanding £38 million for him. The Blues' bid of £32m fell short of the French champions' valuation of him and PSG won't sanction the sale until they find a replacement. The Brazil international wants a return to Stamford Bridge, but the money on offer from the Blues is below the French champions' valuation. However, Les Parisiens have been looking into options from their shortlist since Tuesday night, but are yet to put in any formal offers on replacements with the transfer window due to close at 23:00 BST on Wednesday.