A Fans Dream

Can anyone help. My son is 14 and supported united all his life, but he has never seen them play at Old Trafford or live at all, he has had to live overseas for the past 13 years and this is due to me being in the army. We are moving overseas again 31 January and I am desperately trying to get him tickets to either the Newcastle or Portsmouth matches to suprise him before we leave. Can anyone help, U would be making a Man Utd Fan's dream come true. Thanks