Manchester United boss Ole Gunnar Solskjaer admits he tried to warn his players before Matty Longstaff's winning goal for Newcastle on debut.
Solskjaer was seen giving instructions to Andreas Pereira on the touchline in the second half but struggled to get his message across to Scott McTominay and Fred as he urged them to sit deeper.
Longstaff made them pay on his first Premier League start as he delivered a crushing blow to United with his 71st minute winner.
"We weren't set up for the counter-attack," said Solskjaer.
"We conceded at least two goals Everton away Wolves away from our own corners, maybe two against Everton in one game.
"And that shouldn't happen and with the pace we've got, we should lock that corner down.
"But it's impossible to get the message across, because we gave the Newcastle fans something to cheer today, we gave them a game that they wanted, end-to-end at times.
"There are players that try to organise it but couldn't and when that happens, six or seven back in our own box, but we couldn't defend that ball.
"There were two attempts to tackle, from Dan [James] and Fred. We're trying but lacking in that composure and that organiser there."
