Naismith told evertontv: "All we are concentrating on is securing European football.
"We would be so disappointed if we couldn't finish in fifth. I think we have deserved it for the way we have played this season and the push we have had for fourth.
"It's disappointing that [it seems] we have missed out on that [finishing fourth] because, although it's not mathematically impossible, we slipped up against Crystal Palace and at the weekend.
"We will definitely be doing all we can but Arsenal have capitalised. We will fight to the end but the main thing is that we have got to finish fifth."
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