Reports in Germany have suggested that André Schürrle could be on his way to the Westfalenstadion to replace Marco Reus.
The rumours have started to circulate after the Germany international was left out of the Chelsea squad that won at Liverpool on Saturday, and he was scrutinised after a poor performance against Shrewsbury Town in the Capital One Cup. The former Mainz and Bayer Leverkusen player has also not taken advantage of his chances when playing in the Champions League and other matches in the Capital One Cup.
Mourinho said: "If players that played 90 minutes two days ago were fantastic, I expect people who are not playing a lot to raise the level to create me problems.
"I love problems of choices, and it is easy to choose my team for Saturday."
When he was asked precisely about Schürrle and Mohammed Salah about been a disappointment, he replied with a "yes".
This rumour coincides with Borussia Dortmund's Marco Reus been linked with a move. The winger has been linked with German giants, Bayern Munich, and also Manchester City. If Reus did move to Bayern he would be the third player to make the move from Westphalia to the Allianz Arena in the past 3 years; with Mario Götze moving in 2013 and Robert Lewandowski switching this summer.