Jose Mourinho has kept himself busy over the course of the international break.

The Manchester United manager was spotted in Belgium for their 2-0 win over Iceland and was apparently keeping tabs on both Toby Alderweireld and Axel Witsel.

Mourinho has been a long-term admirer of Alderweireld and was desperate to sign the Tottenham defender in the summer.

As for Witsel, it seems Nemanja Matic's woeful displays in 2018/19 have made the manager think about a possible replacement.

The Portuguese has also given some powerful interviews during the domestic sabbatical, slamming his former nemesis Iker Casillas.

They both clashed during their time together at Real Madrid and it seems Mourinho is not happy with Casillas' actions as part of the Spanish press.

He believes Casillas' desire to get back into the national side after a two-year absence has caused him to try and raise criticism of current number one, David De Gea.

United's goalkeeping master has not been universally adored in the Spanish media and he was guilty of a mistake in their recent 3-2 loss to Croatia.

When asked about the criticism of De Gea in Spain, Mourinho replied, per Telegraph: “But why criticism in Spain? Do you know? I know.

"Because there is somebody very powerful that is thinking about jumping [into the Spain team] again but I think it’s very difficult to jump when you have the best goalkeeper in the world in front of you.”

Mourinho was quick to insist that he believed Casillas would have no impact on Luis Enrique's decision as La Roja boss.

However, when asked if we influential in the media, Mourinho replied: "Oh yes."

He's certainly not happy with the treatment of probably United's most important player.

De Gea is yet to agree a new deal at Old Trafford and has been heavily linked with a move to Juventus.

But it seems Mourinho isn't thinking about that and is determined to defend him - fair play.