Newcastle United keeper Nick Pope left the pitch with a shoulder injury late in Saturday's 1-0 win over Manchester United and could be out for around four months, manager Eddie Howe said on Wednesday.

Pope, 31, has started every Premier League and Champions League game for Newcastle this season, but this injury will see him sidelined for the foreseeable future.

"He had a couple of appointments with specialists. Still waiting for final news on what's going to happen," Howe told reporters.

"We suspect he'll be operated on. Roughly out for four months but it's something we expected straight after the game."

Pope's absence will see Martin Dubravka get his chance.

The Slovakian keeper replaced Pope for the final minutes of the game with Manchester United, and his only other appearance this season came against the same opposition in the League Cup.

"I've always had a high opinion of him. Martin is a high class goalkeeper, a brilliant shot-stopper and very good with his feet too so there's no hesitation about bringing him into the team," Howe said.

Howe poured cold water on media reports linking the club with a move for Spanish keeper David de Gea, a free agent since his contract with Manchester United expired in July.

"I've seen a lot of media headlines regarding goalkeepers and other players. We have not made any enquiries," Howe said.

"If we were to recruit now we'd be recruiting in every area on the pitch. It's a chance for the other keepers to consolidate their positions."

Newcastle completed back-to-back home league wins in the last game with United, and Howe was even more impressed with that performance than the 4-1 win against Chelsea before that, or the draw with Paris St Germain in between.

"It has been a big effort from the group, the players have really grasped the situation we are in," the manager said.