The midfielder helped the Magpies back into the Premier League in 2010 but won't face them in the Championship next season having won promotion with Burnley.
"Gutted I won't get the chance to play at St James's Park next season," tweets Barton. "Premier League will be poorer for 50,000+ Geordies every other week.
"Relegation may act as a catalyst at boardroom level. Because they are not currently worthy of being the custodians of such a great club."