One senior Manchester United star has mocked his new teammate Diego Leon on social media after an embarrassing moment for the youngster against Bournemouth.
United beat Bournemouth 4-1 in their latest game of the Premier League Summer Series - a pre-season tournament held in the US.
Rasmus Hojlund, Patrick Dorgu, Amad Diallo and youngster Ethan Williams all got on the scoresheet for the Red Devils, before a late Matthijs de Ligt own goal spoiled their clean sheet.
It was another encouraging display for United, who beat West Ham 2-1 last time out.
Ruben Amorim once again started a strong side, before rotating heavily after the 70 minute mark.
One of those late substitutions was the Paraguayan left-back Leon, who joined this summer from Cerro Porteño.
He has already caught fans' attention for his confident prediction about breaking into the first team.
He said: "Everyone thinks I'll go out on loan, but I don't have that mindset.
"I'm going to crush it in the preseason and within one or two games, I'll already be playing with them."
Manchester United left back Diego Leon (Image: Michael Reaves - Premier League / Contributor via Getty) How did Diego Leon play against Bournemouth?
He only got 19 minutes, but it was enough to make an impact.
After winning a duel with Bournemouth's Phillip Billing near the halfway line, Leon drove forward before falling over without pressure on the edge of the box.
It prompted fellow South American Manuel Ugarte to poke fun on Instagram, as he posted a clip of Leon's run with an embedded clip of a sniper's shot
But it was not all bad for Leon as the ball fell to 19-year-old Williams, who cut inside and buried a right-footed effort into the bottom corner.
Ugarte recognised Leon's achievement, captioning his post: "First assist", with two accompanying clapping emojis.
Ethan Williams, Toby Collyer, Diego Leon (Image: Ash Donelon / Contributor via Getty) Will Diego Leon start for Man Utd this season?
After two solid displays against top-flight opposition, he may have won Amorim's trust for a squad role this season.
But Dorgu, who grabbed a goal and assist against West Ham remains firmly first choice.
Highly rated 18-year-old Harry Amass has not travelled on the pre-season tour and is expected to leave on loan, with the Championship a possibility.
As Luke Shaw is now more commonly used on the left of the back three, there is a back-up role at wing back.
If Leon can continue to back up his confident words with good performances, then there will be a role for him at Manchester United.
The Reds return to action on Sunday against Everton in their final game of the Premier League Summer Series.