* Leeway on slots needed within days - EU
* Approval still possible by end of July
(Adds quote, Lufthansa no comment)
BRUSSELS, July 1 (Reuters) - Lufthansa could still win quick European Union regulatory approval for its planned takeover of Austrian Airlines if it makes concessions within days, the European Commission said on Thursday.
The German carrier has said it is prepared to walk away from the deal if it does not get a green light by July 31, a deadline brought into focus on Wednesday when the Commission extended its review of the acquisition.
Asked whether an end-July approval was still on the cards, Commission spokesman Jonathan Todd said: "It is possible. But it is on the condition that Lufthansa comes up with satisfactory remedies within the next few days, otherwise the deadline is Nov. 6."
Lufthansa had no immediate comment on his remarks. The airline had reaffirmed on Wednesday it was "confident" it could complete the takeover despite the extended review.
(Reporting by Ilona Wissenbach; writing by Michael Shields; editing by Boris Groendahl, John Stonestreet)