It will be master against apprentice at Old Trafford on Saturday afternoon as Manchester United take on Middlesbrough.
Boro boss Aitor Karanka was Jose Mourinho's assistant at Real Madrid, but tomorrow they will lock horns in the Premier League.
It's a game you can hear live and exclusively on talkSPORT 2 from 3pm on Saturday, and these are the stats and facts you need to know ahead of the big kick-off...
* Manchester United are unbeaten in seven Premier League matches against Boro (W4 D3), last losing to them 4-1 in October 2005.
* Middlesbrough __have scored three goals at Old Trafford on three occasions in the Premier League (May 1997, December 1998 and February 2004). No visiting team has done this more often (Chelsea and Manchester City __have both achieved it, too).
* Middlesbrough's last visit to Old Trafford was in the League Cup last season, beating United on penalties 3-1 after a 0-0 draw.
* Wayne Rooney has scored twice and assisted three goals in his last four Premier League games against Middlesbrough, but the most recent of these came in May 2009.
* Manchester United kept a clean sheet in their final league game of 2012, 2013, 2014 and 2015.
* Middlesbrough haven't lost their final league game of a calendar year since 2009 (W4 D2 since).
* The Red Devils have won their last four Premier League games, last achieving a run of five in April 2015 when they won six in a row.
* Middlesbrough have now won only one of their last 22 away Premier League games (D6 L15), failing to score in 12 of those games.
* After six Premier League games without having a hand in a single goal, Zlatan Ibrahimovic has been involved in 10 goals in his last seven games (eight goals, two assists).
* Only one of Middlesbrough's last 19 Premier League goals against Man United has been scored by an Englishman - Stewart Downing scoring in October 2004.
*stats provided by Opta