"It's not true that I'm not counting on him," insisted Koeman, who believes a loan move is likely.
Keno doubled his personal tally with a low finish and then headed in his third goal by latching on to a Mariano cross.
Zhou, 22, drew 2-2 with compatriot Zhao Jianbo and Ricky Walden, but a 3-0 victory over Gerard Greene secured him top spot in the group.
The single-leg match of the third qualifying round was played behind closed doors at Bloomfield Stadium in Jaffa, the southern part of the coastal city of Tel Aviv-Jaffa.
The plane carrying Bale, who will play on loan at the team he left to join Real Madrid in 2013, touched down at Luton Airport (north of London) at around 1 p.m. local time. Spain international left-back Sergio Reguilon, who will also join Spurs in a move worth around 30 million euros, was also on the plane.
Zaha's solitary goal a week ago gave Palace a 1-0 win at home to Southampton, and he was on target twice more to produce the surprise of the weekend.
While Leipzig has lost significant quality in person of Timo Werner (Chelsea) and Patrick Schick (Leverkusen), all hopes remain on Moenchengladbach's shoulders.
In stoppage time, Zhang Chengdong's right-footed volley enabled Hebei to cut the deficit to 3-2.
"The fans are right to complain, but we have to consider factors like the limited time the coach has had and the training possibilities," he added. Enditem
Hoffenheim defended deep in the hope of protecting their narrow lead to the final whistle, but it didn't work out as Cologne substitute Dominick Drexler tapped home a rebound from close range to restore parity in the 88th minute.
Considering that the Bundesliga's curtain-raiser between treble-winning Bayern Munich against FC Schalke may still be played behind closed doors as the city of Munich is reporting a rate of over 40.