|66/1||Swansea are 66/1 with Coral to win the Europa League
Laudrup's side, who won the Capital One Cup and finished ninth last season, start their domestic campaign against the Premier League campions on August 17.
"We have a couple of players not here. We didn't want to risk Pablo because we are talking about a muscle injury," Laudrup told Wales Online.
"He's already training but we will wait and he will train today and tomorrow and with the squad on Friday.
"The players are off for the weekend and hopefully he will be 100% for Monday and we can go from there.
"Jonjo is sick, yesterday he had a fever. We spoke to the doctor last night and we agreed to see how he was this morning to see if he was better but he is worse so that is why he has not travelled."