Zahavi, National Team eliminated from Euro qualifying with 2-1 defeat in penultimate contest.
"We want to provide an opportunity for the people of Israel to unite around an event that embodies national pride and a triumph for the Blue and White," the initiative's organizer said.
With Euro hopes hanging by a thread, Israel to wrap up its campaign vs Switzerland, Romania, Andorra
Romania was a German ally in World War Two until August 1944 and hundreds of thousands of Romanian and Ukrainian Jews and Roma were killed in areas it controlled.
"We received with a heavy heart the news that a resident of our city was killed in a tragic accident," Ashkelon mayor said in a statement.
"The Romanian Army's radar surveillance system identified a possible unauthorized breach of national air space, with a signal detected on the route to the town of Galati," the defense ministry said.
After falling behind early, Gloukh powers Israel to a 1-1 draw at Romania. The blue-and-white will now get ready for Belarus on Tuesday night back in Tel Aviv.
Iohannis was speaking a day after Kyiv said Russian drones had detonated on Romanian territory, a claim Bucharest denied.
An Ukrainian industry source said that two Russian drones had fallen on the Romanian side of the Danube.
The previous Olympia Masters was held in 2012, but came back after a 11-year hiatus and was held in Romania for the first time.