The 20-year-old striker joined the Foxes in a £3million deal on transfer deadline day last week, returning to the club where he finished as 12-goal top scorer at the end of a season-long loan spell last term which saw the Championship side reach the play-off semi-finals.
Waghorn was keen to put that first-team experience to good use when he returned to Wearside, but instead the arrivals of Danny Welbeck and Asamoah Gyan have seen him slip further down the pecking order than ever.
And that meant he jumped at the chance to rejoin Leicester, this time on a permanent basis.
"It wasn't that much of a wrench having to leave," the South Shields-born frontman told the Newcastle Evening Chronicle. "It was just sad they didn't give me a chance and I didn't get a fair crack of the whip.
"It was sad to be leaving after 13 years at the club but it has happened and I have to move on now. That's football.
"I am at Leicester now and I'm there for the next four years, so hopefully I can do a job for the club. Steve Bruce called me and told me what was going on so it was nice to get that phone call.
"It is nice to have heard that the fans cared - it is a shame I didn't get to show them an awful lot."