"about his availability" is correct and usable in written English.
For example, you could use it in a sentence such as "I wanted to ask John about his availability this week."
Numerous inquiries have been made about his availability.
He played just 12 minutes, raising doubts about his availability.
Coach TOM COUGHLIN did not express optimism about his availability.
Freeney danced delicately around several queries about his availability Sunday.
But he said he understood that he could not keep the Nets guessing about his availability.
"He made a tough but honest decision about his availability, full marks to him," Meninga said.
Mickens, listed as probable with a sprained left ankle that left him unsure today about his own availability, would replace Glenn at cornerback.
Wenger would be the FA's first-choice candidate to replace Roy Hodgson if a way could be found to lever him out of his club role but the Arsenal manager has a contract until the end of next season and, speaking for the first time about his potential availability, he acknowledged that the timing was not right.
But, after emailing Wagner about his own availability, Conklin says he never heard back from the prosecutor.
Asked about his striker's availability for the championships in France, Wenger said: "Let's hope it's good news.
How many single people have trolled through a friend's photo album on Facebook, spotted someone cute and then asked for intel about his or her availability?
