Chelsea have made an approach for Dinamo Zagreb goalkeeper Eduardo, who had appeared set for Sporting Lisbon, placing them in pole position for the 33-year-old.
Sporting Lisbon had been confident of snapping up the Portuguese custodian and even had an agreement in place with Eduardo.
However, the Croatian giants have suddenly refused to negotiate with Sporting Lisbon over Eduardo, despite indicating that they would hold talks.
And as Sporting Lisbon assess the situation, according to Portuguese daily Dario de Noticias, they have competition in the shape of Chelsea.
The Blues are on the lookout for another goalkeeper to add to the ranks to provide competition for Thibaut Courtois.
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And they have approached Dinamo Zagreb about signing experienced custodian Eduardo.
Chelsea are now just waiting for Dinamo Zagreb's president to give the green light to a deal which would take the Portuguese to Stamford Bridge.
Eduardo came through the youth ranks at Braga.
He linked up with Dinamo Zagreb on a three-year contract in 2014.
