While a two-week break from domestic football isn't exactly welcome, the fact that the players come back worn out after travelling the world - or worse yet, injured - leaves them pulling their hair out.
Lukaku has been nursing an ankle injury but was sent on as a substitute by Roberto Martinez in the second half of Belgium's dead rubber World Cup qualifier against Cyprus.
"We do not cry with injuries".
"It wouldn't be the right example to my players to prepare the Liverpool game in one way and then to prepare for next week's trip to Huddersfield in a different way", he added.
'We don't cry with injuries, we may cry with the process that leads to injures, but we don't cry. If they respect me as much as I respect them, we are going to have another one of those matches.
"We do not have just injuries in worldwide teams".
The Portuguese manager is already facing a shortage in midfield following an injury to Lukaku's compatriot Marouane Fellaini and will be delighted to see that his top marksman is not facing a spell on the sidelines.
Well, according to The Times, Mourinho is "dismayed" with Martinez's decision to play Lukaku despite his recent ankle injury. The 29-year-old has started six of their first seven Premier League games this season, scoring his first goal of the campaign against Crystal Palace last weekend. We lost players last season.
"It's an opportunity for another one and we trust". But heading into their clash with Cyprus on Tuesday, Mourinho was hoping Martinez didn't play Lukaku - especially with their crunch match against Liverpool on Saturday lunchtime.
The Red Devils are now second in the Premier League table and level on points with leaders Manchester City heading into their crunch clash with Liverpool this weekend.