Newcastle remain deep in the relegation issue following a 4-0 loss to Leicester on Sunday.
Tielemans converted a penalty to put Leicester ahead just before half-time, before Patson Daka finished a deep move to add a second in the 57th minute.
James Maddison Founds Tielemans, 100th Premier League appeared, again with nine minutes left before the England midfielder scored himself late in the game.
The defeat leaves Newcastle second from the bottom of the table, three points from safety, while Leicester climb to eighth.
Midfielder Gallagher, on loan from Chelsea, broke the deadlock four minutes before half-time, finishing in a Jordan Ayew pass later. Demarai Grey gave ownership on the edge of the Everton area.
Focus again James Tomkins Doubled Crystal Palace’s lead in the 61st minute when he hit the post from a corner.
To replace Salomon Rondon helped Everton save the day with 21 minutes left, but Gallagher scored a superb goal in the second minute of stoppage time to give the Eagles the win.
David Moyes’ men are still 4th – but are now just one point ahead of Manchester United, while Burnley are 18th, two points behind Watford and a game in hand.
https://www.independent.co.uk/sport/football/youri-tielemans-leicester-crystal-palace-foxes-burnley-b1974638.html Newcastle’s misery against Leicester’s Youri Tielemans marks a major milestone in style