MADRID, April 3 (Xinhua) -- Lionel Messi will lead the FC Barcelona attack when his side entertains AS Roma in the first leg of their Champions League quarter-final on Wednesday night.

The Argentinean only played 30 minutes of Barca's 2-2 draw away to Sevilla on Saturday due to a groin injury, but showed how important he is as he led their fight back from 2-0 down, lifting their confidence the moment he stepped onto the pitch.

Messi scored a magnificent last minute equalizer to help Barcelona maintain their unbeaten record this campaign.

Messi rested on Sunday and was able to train without problems on Monday and coach Ernesto Valverde will include him in the side alongside Luis Suarez and Ousmane Dembele, despite Dembele's poor performance in Seville. The rest of the side virtually picks itself, with the only doubt being whether Sergio Busquets has recovered from the broken metatarsal bone in his foot.

Everything points to Busquets being available and he will add stability to the midfield, where he will be partnered by Andres Iniesta and Ivan Rakitic.

Meanwhile Sergi Roberto, Jordi Alba, Gerard Pique and Samuel Umtiti will play in defense and Marc-Andreter Stegen in goal.

Umtiti has been the subject of speculation in the press as the 60 million euro buyout clause he agreed to on his arrival at the Camp Nou in 2016 is now starting to look very tempting to other sides given his excellent performances at Barca.

The French international is now awaiting news over new contract talks with Barcelona, who according to the press have already got in contact with his agent to discuss terms for a new deal.

Roma are sweating on the fitness of Radja Nainggolan and Lorenzo Pellegrini ahead of the game. Nainggolan was substituted at the weekend against Bologna with a muscle injury, but trained on Monday.