The South American pair – Argentine and Brazilian respectively – are considered to be two of Portuguese football’s finest talents, and have been instrumental in the Lisbon side’s spot at the top of their division.
Both of the players featured in the 0-0 draw with closest rivals Porto, and reports claim that Chelsea representatives were there keeping an eye on them.
Gaitan, also a target for Manchester United, is a skilful and creative wide man, who has long been talked about as one of Benfica’s top stars.
At 27, he’s firmly in his peak years and could make an immediate impact at Stamford Bridge.
Talisca is just 21, and has only been with his current side since last summer.
His languid style and flair have drawn comparisons with Selecao hero Rivaldo.