Tonbridge Angels striker Mikel Suarez remains in intensive care after a clash of heads with team-mate Lee Browning.
The 26-year-old was able to walk off the pitch during last Saturday's 4-1 defeat at Farnborough but was later sick in the dressing room.
Manager Tommy Warrilow told
BBC Radio Kent:
"I think everyone is just a bit numb. It puts football in perspective.
"All our prayers and thoughts go to Mikel and his family. I just hope we can help him pull through this."
The Spanish-born player has been a regular at Longmead since moving to Kent, scoring six goals in 29 appearances over the past two seasons.
The incident happened when Suarez clashed with midfielder Browning as he ran back for a header.
He was later taken to hospital after becoming ill while Browning, who was initially left motionless on the turf, recovered in the dressing room.
Warrilow said the seriousness of Suarez's condition was a shock to the whole club.
"We knew he was in hospital but we were under the impression it was just being monitored and it was a bad head injury.
"Once you hear 'intensive care' and 'stable,' it changes the picture altogether," he commented.
“On behalf of everyone Erith & Belvedere FC our thoughts and prayers are with Mikel Suarez and his family. Get well soon ”
Micky Collins on Twitter
Erith & Belvedere manager
"Lee is obviously devastated. He's going to feel a bit guilty but it could have been the other way around. It was just two lads going for a header."
The footballing community has given its support to Suarez via social media website Twitter.
His former team at Loughborough University
"Thoughts very much with Loughboro legend Mikel Suarez. Thinking of you big man #PrayForMikel."
"Thoughts and prayers for my pal and teammate Mikel Suarez. Stay strong big man, pull through this #PrayForMikel."
Frannie Collin posted:
Warrilow said the messages meant a lot to Suarez's family and everyone at the club.
"Hopefully those messages get through to Mikel in some weird way," he added.
"I hope it helps show his family how much the lad is appreciated throughout football. It shows everyone's true colours, that they do actually care."