With United's midfield stocks reportedly not up to the Portuguese' standard, Mourinho is prepared to spend £80 million on the two Ligue One players.
Matiudi is rated around £30 million and is a player that has been on Mourinho's radar for quite some time. His presence in a deep lying midfield role would seemingly allow fellow French international Paul Pogba more creative freedom going forward.
Silva, who is also a target for Real Madrid, will cost United £50 million. The 22-year old has made it clear to Monaco that he is looking to move to a bigger club after some outstanding performances in the Champions League this season.