Chelsea have reportedly entered the race to sign Porto winger Ricardo Quaresma.

Reports emanating from Portugal claim Chelsea are ready to table a bid for the skilful wide-man.

The 24-year-old is thought to be considering his future at Porto and could be interested in a move away to a top club.

Porto are facing a fight to keep hold of their star players following their expulsion from next season's UEFA Champions League.

Porto president Jorge Pinto da Costa has warned any interested club that it will take a bid of £24million to buy the Portuguese international.

"Those who are interested must pay his £30 million buy-out clause," said da Costa.