The club's official television channel will broadcast a special programme from 13:30 GMT until 14:30 GMT, enabling fans to hear from both Mata himself and manager David Moyes ahead of the Spanish midfielder's potential debut against Cardiff City tomorrow night.
The programme could also feature the views of Cardiff manager and United legend Ole Gunnar Solskjaer as he speaks to the media ahead of his no-doubt emotional return to Old Trafford.
Meanwhile, ManUtd.com - in our United Today rolling blog - and the club's official Twitter will provide regular updates from the Mata press conference. All arms of the club media are also ready to make the eagerly-awaited announcement of the new signing's squad number.
For details of how you can subscribe to MUTV, see manutd.com/joinmutv.