Sharma, who missed out on the Test series in England, said that his focus was on the T20s which start from November 21.
Khawaja smashed a match saving innings against Pakistan in the first Test at Dubai has been out of action since the second Test of that series.
He added that the current side was "inexperienced" and "getting back together" after the ball-tampering scandal.
"Day-night Test cricket in some countries is going to be one of those ingredients that could transform Test cricket back to where it should be."
Cricket Australia had pencilled in the December 6-10 Test in Adelaide as a pink-ball match but India baulked at playing under floodlights
Cricket Australia (CA) had wanted the first Test in Adelaide from December 6 played under lights to tap on the growing popularity of pink-ball cricket
Hasan Ali getting back in his groove
Bowlers put Pakistan ahead on the opening day of Abu Dhabi Test
Yasir Shah dents New Zealand with early blows
Pakistan's golden chance to make massive gains
Abbas provides the much needed breakthrough
PSL 2019 draft: All possible picks
Another Test for the 'professor' against the Kiwis
Young pace gem delivers a wonderful spell
PSL Draft 2018 - All Information Including Possible Picks
‘Will not be selecting players unwilling to come to Pakistan for PSL’ – Javed Afridi