The pundit and Leeds boss weren't happy with the winger after the Watford defeat.
Botaka only came on for the last few minutes of Leeds' 1-0 defeat at Watford on Saturday afternoon and pundit Whelan believes he wouldn't have even been in the matchday squad had Mustapha Carayol been fit.
Whelan told BBC Radio Leeds: "Managers have different opinions of players and that is the problem.
"With Botaka, he wasn't bought by Evans, he was brought in by Uwe Rosler. If Carayol had been fit, I really don't think he would have been here."
And Evans' assessment supported the pundit after the match. He told TV Yorkshire: "He was very fortunate to play. He's got a huge heart and he wants to be a huge part of it but he's got to improve his performances."
Botaka certainly hasn't been anywhere near good enough since joining Leeds but, as Evans suggests, at least he has shown passion and desire at Elland Road.
Despite the fact the 22-year-old was a Rosler signing, meanwhile, even the German was unhappy with Botaka's displays when he was first brought to Leeds.
Indeed, Botaka's final ball was constantly questioned - but he certainly wasn't the only United man to let his side down against Watford in the FA Cup.