Liverpool manager Brendan Rodgers has said it's too early for Martin Skrtel to return to the side after he returned to training this weekend following a knee injury - which led him to missing Premier League games against Tottenham and Aston Villa.
The injury situation remains 'pretty much the same' with the Reds according to Rodgers, whilst Lazar Markovic is suspended after he was sent off in the Europa League semi-final whilst playing for Benfica against Juventus.
Rodgers has said he and the side are 'very excited' for the return of the Champions League, and said five years is too long for the club to be without the competition.
The Liverpool boss was also asked what he would regard as success, saying: "As you can imagine, we're really looking forward to it. Success is qualifying from the group, and we'll take it one game at a time. Our main objective is to come out of the group and qualify.
"I think it really brings home how long the club has been away and it's been too long. When I came in it was my main priority to get back to this level, because it needs to be at this level, both for the club and football in general."
He's also not underestimating the quality of the Bulgarian champions, even though his side go into the game as heavy favourites tomorrow evening:
"We need to be concentrated, for us at Anfield it's very much about ourselves. We need to be really aggressive in our pressing and a bit more tempo with our passing.
"We know they'll be a tough opponent."