The Sun says the Blues have offered at least one player - understood to be Paulo Ferreira - plus around £8m in cash.

However, having flogged both Ferreira and Ricardo Carvalho to Stamford Bridge in the first place, Porto are stalling in the hope of getting as much cash as possible - with Quaresma's asking price set at £25 million.

Mourinho has so far recorded a net profit of £7m over the summer and, having lost Arjen Robben, is concerned his 4-3-3 formation could be scuppered if he is hit by injuries.