Former Barcelona defender Edmilson believes the attacking trio of Lionel Messi, Luis Suarez and Neymar is arguably the best front-line in the Catalans' illustrious history.

The Brazilian played alongside the likes of Samuel Eto'o, Ronaldinho and Thierry Henry during his time at Camp Nou between 2004 and 2008, but feels they have never had an attack quite as potent as their current line up.

"The trident formed by Leo Messi, Neymar, and Luís Suarez is the best trio in Barcelona's history," the Brazilian told Barca TV.

"Everyone in Brazil is happy for Neymar. He's playing fabulously, scoring goals and getting on well with Messi and Suarez."

Edmilson then went on to discuss Barcelona's Copa del Rey tie with another of his old clubs, Villarreal, and warned that Marcelino's men should not be underestimated.

"If Barca have a favourable result tonight, they could essentially clinch an appearance in the final.

"Villarreal are a young team, with players who have good touch with the ball. Barca need to focus on Villarreal's counterattacks. They defend well and get out quickly on the counter. Barca are in top form by they need to know how to stop that."

The first leg of the semi-final tie takes place at Camp Nou on Wednesday.