The Spaniard admits there is a long list of improvements to be made at the club.
They were beaten 2-1 at home by Watford on Saturday, in a lacklustre performance that ensures their search for a first win of the new campaign goes on.
Speaking after the game, youngster Ayoze Perez lamented his team's showing against the Hornets and admitted that troubling the scorers is proving to be a tough ask the moment, with frustration building in the final third.
"It wasn’t good enough,” Perez said, as reported by the Shields Gazette. “I think the second half was a bit better, but it’s not good enough.
“Every game we have many crosses, but we don’t score enough goals. We have everything we have to improve. It’s not good enough."
On a personal level, it has also been a tough start to the new campaign for Perez. From being an integral part of the team under the previous regime, the Spanish striker has seemingly become a bit-part player since the arrival of Steve McClaren.
Perhaps in part to Perez's omission, Newcastle have scored just three goals from their opening six games of the season; a record which puts them among the lowest scoring teams in the entire pyramid of English football.
Up next for McClaren's team in the league is the visit of Jose Mourinho's Chelsea, who unfortunately for the ex-England boss, may have just turned the corner on the precipice of their Tyneside trip.