Luiz, who spent four years with the Portuguese giants before joining the Blues in a £26.5million deal in January last year, was looking forward to catching up with some old friends ahead of tomorrow night's first leg in Lisbon.

But the Brazilian insisted any loyalties to the club that brought him to Europe would end the moment combat began at the Estadio da Luz.

Asensio's Screamer Vs FC Barcelona
Asensio's Screamer Vs FC Barcelona
In one of Real Madrid's most outstanding performances at the Camp Nou, Los Blancos beat FC Barcelona 3-1 in the Spanish Supercup. Real were leading 2-1 after Cristiano Ronaldo's 80th minute goal, but just before the final whistle, we sealed the win with this beautiful Marco Asensio strike.
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He said: "They'll be my mates right up to the first whistle but, after that, Benfica and Chelsea are going to be adversaries and both are going to fight almost to the death to win.

"As the ref starts the game, the fight will start."