The former Liverpool boss replaced Steve McClaren following his sacking on Friday.
The Spaniard has replaced Steve McClaren at the club future after he was sacked on Friday afternoon, news that was first reported by HITC Sport last week.
He will arrive at the club knowing he needs to make an instant impact, as they currently sit in the relegation zone and a point away from safety with ten games remaining.
He will be confident of doing just that though, with his record in his first ten games when replacing Roberto Di Matteo at Stamford Bridge suggesting he may be able to save the Magpies.
After taking over in November 2012, the Spaniard’s first ten games saw them win five, draw three and lose just two, picking up 18 points as a result.
In that time they scored 21 goals, including eight in a club record 8-0 win over Aston Villa, and managed to concede just eight.
It wasn’t all positive though, as they did lose to bottom placed Queens Park Rangers in arguably one of their worst performances that season.
Still a decent return from Benitez in those ten games, and Newcastle will be hoping he can have a similar effect now as they seek to escape relegation at the death once again.