Christian Eriksen's agent said the player is undergoing detailed examinations after the Denmark international collapsed with a cardiac arrest during his side's Euro 2020 opening match against Finland on Saturday.
"We all want to understand what happened to him and he wants to as well. The doctors are doing some detailed examinations, it will take time," Italian newspaper Gazzetta dello Sport on Monday cited Eriksen's agent Martin Schoots as saying.
"Christian does not give up. Him and his family want to send everyone their thanks."
"We spoke this morning (Sunday). He was joking around and in good spirits, he was doing well," he added.
Erksen's team-mate Kasper Schmeichel also visited him at the hospital yesterday.
"It was damn nice to see him. See him smile and laugh and be himself," Schmeichel told Denmark's TV2 today.
"It was a wonderful experience, and it's something that has helped me a lot: to be able to see he's okay, after lying there that way. We talked about nothing and everything. That he is well is the most important thing."
The Group B game was halted and eventually restarted an hour and 45 minutes later, Finland winning 1-0.
The incident raises questions around the workload players have been subjected to. Eriksen was playing in his 66th competitive game in the one year since soccer restarted following a shutdown due to the coronavirus pandemic.
The messages of support for Eriksen have come pouring in, from within the game and beyond, something that Schoots said has helped cheer up the Dane.
"He was happy because he understood how much love he has around him," Schoots added. "He received messages from all over the world.
"He was particularly struck by those from the world of Inter Milan; not just from his teammates, who he heard from through texts, but also the fans.
"Half the world has contacted us, everyone is worried. Now he just needs to rest. His wife and parents are with him. But in any case he wants to support his team-mates against Belgium."
Meanwhile, former Bolton Wanderers midfielder Fabrice Muamba said Eriksen's collapse brought back painful memories of his own cardiac arrest and that the Dane's toughest challenge in recovering from the incident will be a mental one.
Muamba, who collapsed on the pitch in an FA Cup match in 2012 and was technically dead for 78 minutes, said it took him more than a year to come to terms with the incident, which forced him to retire at the age of 24.
"It's too early to know about his physical health, but I can share something of the mental battle which, in many ways, is the toughest part of the journey ahead," Muamba wrote in his column for The Times newspaper.
"My advice is to take a step back and take all the time he needs because it will definitely affect him mentally, and his family.
"That worry plays in your head, whatever the doctors tell you. It's not easy to get over."