Charlton football club chairman Richard Murray said: "To have a club like Manchester United tracking our youth players clearly shows the quality that our academy is currently producing.
"It also provides further evidence of the value of retaining our academy status, a decision the board made earlier this summer despite the club's relegation to League One.
"Of course, nothing would have made us happier than Sean coming through the ranks and representing our first team, and our coaches had high hopes for him.
"We did our utmost to persuade him to stay, and offered scholarship terms similar to those which we gave Jonjo Shelvey at the same stage in his career.
"Of course, Jonjo's progress over the last year or so, not to mention his impact on the first team, just shows what is possible at Charlton, and clearly illustrates our commitment to youth development.
"But equally, joining such a big Premier League club is obviously an attractive prospect, and Sean and his family made it clear that they wanted to move north to United.”
Murray added: "Manchester United have behaved entirely honourably throughout the process, and I'd like to thank them for that.”
Maidstone-based McGinty joined the Addicks at the age of 12 and, despite his age, represented both Charlton's U18 side and reserves last season.
After several appearances for the U18s, McGinty made his first start for the second XI in a 1-0 defeat to Millwall at Stonebridge Road in April.
He then went on to feature in a 5-0 win over Southampton in a behind-closed-doors fixture at Sparrows Lane and also started a 2-0 triumph at Reading.
charlton-athletic.co.uk
hope he turn out to be another Evans or better than him
He's effin 15..........
Originally posted by marcteng:hope he turn out to be another Evans or better than him
Lol hopefully.