In the past two warm-up games for Manchester United, 15-year-old youth talent Gabriel accompanied the first-team veterans on the trip. But prior to kickoff and at the interval, the player dubbed "Mini Messi" was unable to stay with the squad, as rules require him to have his own private space for changing.

According to the Premier League's safeguarding rules for minors, whether at Old Trafford, other venues, or the training ground, Gabriel must change his shirt in his own designated private changing room. League regulations state that any player under 18 must have a separate changing room during first-team training and matches.
Only after the first-team players have finished changing can Gabriel enter the main dressing room to listen to manager Carrick's tactical instructions. Gabriel will not turn 16 until October, meaning he will have to continue this arrangement for more than two years.
Arsenal's Max Dowman underwent a similar arrangement; last season he had to leave Arteta's squad and change alone, but he eventually earned a Premier League winner's medal, making it a successful campaign.
Fortunately for Manchester United, the club's shirt sponsor is Qualcomm Snapdragon, so Gabriel is unaffected, as regulations require that players under 18 must not wear shirts with gambling sponsors. According to British media reports, United is negotiating a training kit contract with such a sponsor; if a deal is reached, Gabriel would be unable to wear training shirts with advertising.
On Saturday in Stockholm, Manchester United beat Atlético Madrid 2-1 in a friendly. Gabriel came on as a substitute in the 82nd minute alongside midfielder Jim Sweets, making his debut. As a result, at 15 years and 299 days, he became the youngest player to debut for Manchester United in an unofficial match.

Of course, friendlies are not counted in the club's official records. The current youngest player to make a competitive debut for United remains goalkeeper David Gaskell, who played at 16 years and 19 days under Sir Matt Busby in 1956.
Gabriel's best chance to break the record lies in the English League Cup. United are in the Champions League this season, so they enter the League Cup in the third round, which takes place in September. Gabriel's birthday is October 6, 2000, at which point he will still be under 16, so if he plays, he would set a record.
In last season's U18 Premier League, Gabriel won the Player of the Season award. Despite being only 14 at the start of the season, he scored 29 goals in 32 appearances, helping United's U18 team reach the FA Youth Cup and U18 Cup finals.
Gabriel has already represented England at U17 level. This summer he worked hard on fitness, hoping to prepare for a potential senior team debut. The match against Atlético showed he still lacks physical strength, as he was repeatedly pushed off the ball. In competitive English matches, where physicality is more intense, he will need to continue adapting.
Manchester United cannot sign a professional contract with Gabriel until he turns 17. However, because he holds Irish nationality, he can transfer to a European club once he turns 16. Last summer, Barcelona expressed interest. United's hierarchy, especially football director Jason Wilcox, personally persuaded Gabriel to stay, promising him a pathway to the first team.

But Barcelona remains lurking; Gabriel also visited Barcelona this summer, and United must stay vigilant.