Lionel Messi has been instrumental in Barcelona's success this season
Uefa Champions League final: Barcelona v Manchester United Venue: Stadio Olimpico, Rome Date: Weds, 27 May Kick-off: 1945 BST Coverage: Live on ITV1 and Sky Sports 1, BBC Radio Five Live, BBC Radio Manchester; BBC Sport website.
Barcelona manager Pep Guardiola has backed star forward Lionel Messi to deliver on the biggest stage and help his side beat Manchester United.
The Spanish side take on United in the Champions League final on Wednesday at Rome's Stadio Olimpico with Barcelona looking to record a historic treble.
"We are going to see a great Messi, he is in good form and the team will help him to deliver," said Guardiola.
"If we play in the way we can play, then Messi will have a good game."
Some consider Messi, 21, to be the best player in the world on form and he comes up against Cristiano Ronaldo, who beat the Argentine to the title for Fifa World Player of the Year for 2008.
Their match-up is an intriguing battle and could decide the destination of the next winner of the Fifa award.
Guardiola meanwhile says his side will play without caution against Manchester United and has told his side not to come off the pitch after Wednesday's final with any regrets.
"In finals there's always an element of all or nothing," said Guardiola.
"You might be afraid to play but this is something you have to leave in the dressing room and just go and play."
Barca could become the first Spanish side in history to win the treble if they beat Manchester United on Wednesday.
The Catalan club's title triumph this season was their first in three years and is their first domestic double for 11 seasons.
Messi will shine on big stage - Guardiola
Their Copa del Rey victory earlier this month was the first time they had won the cup since 1998 and was their first piece of silverware in two seasons.
Guardiola, in his first season in charge, has returned the glory days to Barcelona and has vindicated their decision to part company with long-standing coach Frank Rijkaard at the end of last season.
Free-flowing, attacking football has been the style that has reaped rewards this season and Guardiola says they will not change the way they play on Wednesday.
"We have to show what we have done throughout the season," he said.
"We're a tremendous team and we have to apply ourselves 100%.
"I don't want us to come off the pitch on Wednesday thinking we could have done things differently. We're going to play football and try to control the game.
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