United, who won the League Cup last month, moved up to fifth in the league, four points behind fourth-placed Liverpool, with a 3-1 league win at Middlesbrough on Sunday, and will face Anderlecht next month in the Europa League quarter-finals.
United thrash struggling Middlesbrough
"If I can choose, I will choose the Europa League rather than to finish fourth because it gives us the same - Champions League football," the 54-year-old told the club website. "It is a trophy, it is prestige, it is Europe and it means playing a European Super Cup fixture next year."
The former Real Madrid manager acknowledged the importance of a top-four finish but said the club's rivals had a distinct advantage in not having to campaign on both European and domestic fronts heading into the final stretch of the season.
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"I know Chelsea, Tottenham, Liverpool, Arsenal, Manchester City do not play in Europe, they only have one match per week," he added. "But we are going to fight like we did [against Middlesbrough]."
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