Chelsea manager Jose Mourinho says he will rotate his team against Watford.
The Blues kick off their FA Cup campaign with a home game against the Hornets and Mourinho says the FA Cup is an important objective for his team.
"It's a difficult game,' said Mourinho.
"It's a good team, one of the best teams in the Championship.
"We have the experience of the difficulties against teams like Bolton, Derby, teams that we played already this season.
"They have a good team. They are fresh. They didn't play the New Year fixture.
"They will have big support from their crowd. They will go to try to beat us, so we need to be alert because the game is going to be difficult.
"It's impossible to go for one trophy, or two, or three, or four. It's only possible to go for the next match, and the next match is the FA Cup and we want to try to win the FA Cup, simple as that.
"We face the FA Cup to win. Obviously we are going to rest a couple of players, that's normal, and give a chance to other people to play and to show [what they can do]."
