Whites boss Daniel Farke gave a debut to new summer signing Ethan Ampadu who started in centre midfield and the 22-year-old made a good impression as the first half ended 0-0, Leeds guilty of squandering chances in front of goal.
Leeds again pushed forward after the break but a period of strong pressure from Monaco led to the French side going ahead through a Wissam Ben Yedder penalty awarded for Willy Gnonto dangling a leg as Leeds looked to clear a corner.
The second half also featured a Whites return for Sam Byram who has been training with Leeds and was brought on as a second half substitute but Monaco bagged a second goal through a fantastic bullet header finish from Kevin Holland from a left flank cross.
Graham Smyth, the YEP’s chief football writer, hands out the scores from Saturday’s pre-season friendly at the LNER Community Stadium in York.
1. Illan Meslier
7 - Some good bits of distribution. Didn't have much else to do. Photo: LUFC
2. Luke Ayling
7 - Played really high and got forward. Did lots of organising. Some good defensive interventions. Photo: LINDSEY PARNABY
3. Pascal Struijk
7 - Looked comfortable enough on the right side, grew into the game after a tricky start. Photo: Naomi Baker
4. Liam Cooper
7 - Cleared danger, battled well and moved the ball efficiently. Photo: George Wood
5. Leo Hjelde
7 - Did absolutely fine at left-back. Defended well in his duels, tucked inside to try and get on the ball. Photo: George Wood
6. Ethan Ampadu
7 - Pulled the strings when Leeds first came into the game. Influence in possession waned a little. Got stuck in, added steel. Photo: LUFC