City have had a poor campaign, relinquishing hold of the Premier League trophy, exiting the Champions League in the last 16 and being stunned by Crystal Palace in the FA Cup final.
They end the season with a trip to Fulham on Sunday (kick-off 16:00 BST), knowing a point should clinch a Champions League place for next season.
But City have a quick turnaround this summer as they will be competing in the expanded Club World Cup, which starts in the US on 14 June.
“It’s obviously difficult because the lads are mentally drained from this season,” said Foden. “I believe everyone needs the right time to recover to go back to next season.
“Obviously there will be this competition that’s coming up. It’s going to be a funny one, some clubs will take it more seriously than others but I know City and the club we are, we’ll definitely take it seriously.”
Before that, manager Thomas Tuchel names his England squad on Friday for the World Cup qualifier in Andorra on 7 June and friendly against Senegal at Wembley three days later.
Asked if he needs to rest his ankle, Foden said: “Obviously it’s a difficult situation for me with the internationals right around the corner.
“It’s something we have to speak with the club and national team to see maybe if it’s better to rest and get my ankle fully 100% back how I want it.
“I just don’t know at the moment. It’s a conversation to be had and we’ll see what happens.”