John Carver’s side are currently 11th in the Premier League while Louis van Gaal’s men are fourth, looking to keep the likes of Liverpool and Southampton at bay in the race for a Champions League place next season.
Janmaat has impressed since arriving at St James’ Park and he is likely to play a key role later this week, but despite Newcastle welcoming their illustrious opponents the Dutchman believes it is United who are under the most pressure.
“I think that the pressure will be more on them than us,” Janmaat said.
“We got the three points out of our last game which was crucial for us. Those points will build our positivity as a team and we can now be more confident to play Manchester United.”
The match Janmaat was referring to was Saturday’s 1-0 win against Aston Villa, a result that heaped the pressure on Tim Sherwood but ensured Carver’s men climbed closer to the top 10.
In the reverse fixture earlier this season United defeated Newcastle 3-1 on Boxing Day, with Papiss Cisse’s strike a mere consolation after two goals from Wayne Rooney and one from Robin van Persie sealed a win for the hosts.
But there is no doubt they have struggled in recent times and Newcastle will be quietly confident of inflicting another away defeat on a side who have flattered to deceive too often this season.