Joshua is returning to the ring following a back injury and will take on the colourful American over eight rounds.
Gavern had success in his previous outing in England when he defeated Larry Olubamiwo and former world champion James Toney to reach the Prizefighter UK v USA Heavyweights final in November 2013.
The 37-year-old from Florida was edged out by Michael Sprott in the final, but is planning to give Joshua, who has blasted out all 10 of his professional opponents inside three rounds, a tough night.
???I’m excited to return to the UK,??? said Gavern, who has lost 19 of his 49 professional fights, including a points defeat to Gerald Washington earlier this month.??
???I had a great time in and out of the ring at Prizefighter and the fans were great.
???Anthony Joshua is a big talent but I’m confident I have the experience and have operated at a much higher level. Either way, we are going to find out plenty about AJ next week in Newcastle.
???I love fighting in the UK and England in particular as the boxing fans are so knowledgeable and passionate about the sport.???
Joshua has been out of action for four months and is itching to get back into the ring.
???It???s been frustrating being out of action but the injury has totally healed up and I will be firing on all cylinders next Saturday,??? said the 25-year-old.
???Fans in the north east are mad about sport and I am sure it???s going to be a great atmosphere. I plan to put on a show for them.???
Promoter Eddie Hearn added: ???It’s great to see Anthony return from injury and I’m looking forward to seeing him face Jason in Newcastle.
???It’s a nice test on his return, Gavern has plenty of experience but Anthony has plenty of frustration to let out and north east boxing fans can expect an explosive performance in Newcastle next week.???
Joshua???s clash with Gavern is part of a big night of action in Newcastle where South Shields??? Anthony Nelson faces Dundee???s Jamie Wilson for the vacant Commonwealth super-flyweight title.
Local favourite Jon-Lewis Dickinson challenges Stephen Simmons for the Scotsman???s WBC international silver cruiserweight title and Jeff Saunders makes his professional debut.