But a two-week time frame would put him in contention to feature in Arsenal's two semi-final legs, with the first on April 26 and the return a week later on May 3.
The Gunners came from 2-0 down to draw the second leg of their quarter-final at CSKA Moscow 2-2 on Thursday night, progressing 6-3 on aggregate against the Russian side.
Newcastle are on a fine three-match winning run, but Arsenal's 2-2 draw at CSKA Moscow - enough to reach the semi-finals - ended their own streak of six straight victories in all competitions.
"Everybody speaks about Atletico Madrid that they look the strongest team on paper", he said, but he also described Marseille as a hard place to go.
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Wenger signed a fresh two-year contract at the end of last season after leading the club to FA Cup glory and Lacazette reckons a successful finish to their Europa League campaign will be enough to keep the embattled Frenchman another season.
"At this stage of the competition all games are hard, big rivals and if the draw wanted us against Arsenal, then we'll take that", Villaverde said. "They are a great team up there for many years in their league and going far in European competition". They are a rival very similar to us.
But Benitez does not think it will be a problem for the visitors, adding: "Normally, if your team is travelling, you will say, 'We will be a little bit exhausted.' The other manager will say, 'No.' I have experience of both sides".
Asked whether it was an advantage to play the return game at home, Villaverde said it was impossible to say in advance. We must play both games very seriously and work very hard. "We know no other way".