That is according to Whites boss Marcelo Bielsa, who has criticised the 20-year-old for his expectations upon arriving at Elland Road.
Nketiah returned prematurely to the Emirates last month after failing to play significant minutes at Leeds.
"Nketiah arrived here because Leeds was the ideal place to grow, because it was me who was going to coach him," Bielsa said.
"I know who I am and I don't believe those messages. Everything around the transfer of Eddie was a lie, Nketiah came to play. In any way. He didn't play and he left.
"But even worse, because I, in two situations, I put Bamford on the bench and in two months he was with us, he wasn't able to play. Players do preseason.
"One player in six months plays two matches, thinks he will arrive to one club and play is underestimating what Leeds is as a club, a team and an institution."