Krul feels a top ten finish will be satisfactory.
He said: "We knew this year with Europe it wasn't going to be easy to achieve the same as we did last year but we're in the next round in Europe, we've got the FA Cup to look forward to and hopefully we can climb up the league as soon as possible.
"We want top ten and just take it from there.
"We're not far away from the top end of the table. The league is quite tight this year and a few wins puts you right back up there."