Newcastle fear Rafa Benitez will walk out of the club when his contract expires at the end of the month, claims The Sun.
Benitez has been offered a new contract by Newcastle but wants assurances before pledging his future to the club.
The Spaniard has been in a constant battle with Newcastle owner Mike Ashley in the last few years about investment in the squad.
Benitez has grown increasingly frustrated by a lack of investment at Newcastle having missed out on several transfer targets in the past.
Newcastle signed Salomon Rondo from West Brom on a season-long loan deal last term and the Venezuela international was a revelation for the club.
However, it seems unlikely the Magpies will push to sign the 29-year-old on a permanent basis, much to Benitez’s frustration.
While Newcastle are hopeful Benitez will sign a new contract, there is a growing fear they could be left without a manager at the start of next month.
Benitez did tremendously well to guide Newcastle to a 13th place finish in the Premier League last season.
Since taking charge of Newcastle in March 2016, Benitez has impressively won 42.5% of his matches in all competitions.