In recent months, the Sky Blues have overlooked the 18-year old who has spent the last week training with the Jets.
"Nik is a very talented young player and someone that we are very pleased to have at our club," club CEO John Tsatsimas said this morning.
"He is still of course very youthful and has plenty of time as a footballer ahead of him, so we're happy to have the chance to see him progress here.
"Our coaching staff in Gary van Egmond and Mark Jones have a fabulous record of really developing quality young talent and bringing out the best in young players. We're certain that Nik will go from strength to strength in his time in Newcastle."