Mourinho intends to put pressure on his title-winning squad by signing new players, also in an attempt to strengthen Chelsea..
Chelsea topped the league for a record 274 days and rounded off the campaign by beating Sunderland 3-1 before lifting the trophy for the fourth time.
“I know that our rivals are not going to accept this title and they are going to fight and there are three or four teams that will be aiming for us,” he told reporters. “We have to be better – me, the players and our squad.
“Maybe they need some fresh blood to keep them under pressure. They know me they know that they are not going to keep their positions on the basis of this year.”