The Leeds boss isn't denying that the Sunderland loanee has been in poor form.
Indeed, the 25-year-old joined Leeds on loan recently and Evans insists the winger must justify any game time he receives.
But the Whites head coach acknowledges he was an 'exceptional' player before injuries hit him and believes the Sunderland-owned winger can improve with game time.
Evans is quoted as telling reporters: "We all know Will was an exceptional player before his injuries and he’s come here to get some game time but he has to justify it.
"He gave us a spark in terms of getting to the byline but was his quality good when he got there? There’s a little indication of him not playing football. With some game time under his belt he probably picks people out there."
Of course, Leeds supporters produced the same verdict after the Sunderland loanee's substitute performance at Bolton on Saturday afternoon. Since joining the Yorkshire side on loan, the 25-year-old has generally been poor.
That said, there is no reason Evans isn't on the money. With game time, a player who has clearly been affected by injuries can certainly improve.
Whether that improvement is enough to warrant Leeds wanting to extend Buckley's stay is another matter. And the winger may well find himself back at Sunderland.
As for United, Blackburn Rovers travel to Elland Road on Thursday night for what will be Evans' first home game in charge. That should be interesting, to say the least...