Everton winger Aaron Lennon was detained under the Mental Health Act by police over concerns for his welfare.
The 30-year-old was taken to hospital “for assessment” after police were called to Salford on Sunday.
Lennon is now “receiving care and treatment for a stress-related illness”, his club has said.
The England international, who joined Everton from Tottenham in 2015, has not played for the first team since February.
News of Lennon’s admission has led to an outpouring of support on social media from those involved in the game, as well as fans of his current and former clubs
Ex-Liverpool and Aston Villa striker Stan Collymore, who has been affected by depression: Thoughts and love with Aaron Lennon and his family right now. I know that place, and I know he’ll be fine with good support from us all.
Former world heavyweight boxing champion Frank Bruno, who has battled depression: Thoughts are with Aaron Lennon today, stay strong & as positive as possible, there is light at the end of tunnel. You will get through this boss.
Lennon’s former club Tottenham Hotspur: Get well soon @AaronLennon12, we’re all thinking of you.