England's wicketkeeper-batsman - speaking to Sky Sports' Ian Ward in an interview you can see during coverage of the T20 Tri-Series game against New Zealand from 5.30am on Sky Sports Cricket on Tuesday - believes the Test and ODI games could be phased out "soon or in 15 to 20 years".
However, Buttler, who played the last of his 18 Tests to date against India in December 2016, says the five-day arena remains the "pinnacle" and that he would be "sad" if it was jettisoned.
