Aston Villa must handle a "difficult" atmosphere in their "biggest game of the season

Robin Olsen could start against Olympiakos, having conceded five goals in the last two matches

Aston Estate must handle a "troublesome" air in their "greatest diversion of the season" as they see to come from behind against Olympiakos, says director Unai Emery. 

The Chief Association side headed to Piraeus trailing 4-2 taking after the primary leg of their Europa Conference Alliance semi-final at Estate Stop.

Emery admitted his side would have to be be much improved to reach the ultimate.
He said:
"We must do way better. It'll be troublesome with the air."
The former Sevilla and Arms stockpile boss included:
"We got to construct a unused involvement here with our players and our thought. Usually the greatest diversion of the season."
Villa's arrangements have been hampered by vulnerability over their goalkeeping circumstance, with Emery uncertain in case to begin with choice Emi Martinez will be accessible.
Martinez was suspended for the primary leg and was not within the squad for the Chief Association overcome against Brighton on Sunday.
Robin Olsen supplanted Martinez for both matches, and Emery backed the Swede to nominate once more in case required, in spite of Olsen conceding four within the to begin with leg.
"As a individual he may be a exceptionally aware man," Emery said of Olsen. "As a proficient he has an astounding career. Being number two to the leading goalkeeper within the world isn't simple. Continuously he is positive.
"On Sunday he was incredible. He could not do anything to save us within the first leg. In case he plays, he has our regard."
Villa are on the skirt of qualifying for the Champions Alliance following season through a top-four Chief League finish, and Emery said their season might not be considered any less successful if they fall flat to reach the Conference Association last, where Fiorentina anticipate the victors.
"We have delighted in getting here," he said. "To win a trophy in Europe is exceptionally troublesome. To induce here you have got to be steady, but in case we do not win tomorrow, the prepare is clear.
"Possibly we might be a top pick some time recently the primary leg, but they appear with us their control and how they want to be a contender and presently they are top choice. I will plan us to come back, but our handle does not change.
"In the Head Alliance, we are having a phenomenal season. We need to appreciate both competitions. We ought to be glad of our work."