( CNN ) -- Barcelona are desperate to call on the services of Lionel Messi and Zlatan Ibrahimovic for Tuesday 's vital Champions League group showdown with Inter Milan in the Camp Nou . Barcelona must avoid defeat which could see them make a sensational exit if Russian surprise package Rubin Kazan beat Dynamo Kiev in the other match in Group F. The defending champions have been sweating on leading scorers Messi and Ibrahimovic , who both have thigh injuries . `` Messi has an injury in the abductor muscle of his left thigh , '' read a club statement . `` We do not discard his presence in Tuesday 's game . `` As for Ibrahimovic , there has been an improvement with regards to his thigh injury but we will have to monitor the situation . '' Barcelona have been in indifferent recent form and a 1-1 draw at Athletic Bilbao on Saturday saw them drop behind arch-rivals Real Madrid at the top of the Spanish La Liga . Barca will certainly want the key pair to be fit for next Sunday 's El Clasico against Real , but first comes a European test against Jose Mourinho 's Italian league-leaders . `` We know what we have to do , '' said Barca captain Carles Puyol . `` We have the same ambitions but we know Barca v Inter is a final and we will face the game as such . `` I do n't like the word failure but not to qualify for the next round would be a huge blow , '' he added . `` This game will be a test of character for my players , '' Mourinho told reporters after his side 's 3-1 win over Bologna on Saturday . They will also welcome back Wesley Sneijder , who has recovered from an ankle injury and will field Samuel Eto ' o in attack as he returns to the Camp Nou for the first time since his close season transfer switch between the European powerhouses .
Barcelona sweating on fitness of Liionel Messi and Zlatan Ibrahimovic . Barcelona 's leading scorers doubtful for match against Inter at Nou Camp . TL;DR Lionel Messi, Luis Suarez and Neymar are all ruled out with injuries in the first leg of their Champions League quarterfinal tie against Atletico Madrid.