Prof Sharma is chair of the FA’s expert cardiac consensus group and is a consultant for charity Cardiac Risk in the Young (CRY).
He said reports Eriksen has been awake in hospital are “a very good sign”.
Prof Sharma added: “I’m very pleased. The fact he’s stable and awake, his outlook is going to be very good.
“I don’t know whether he’ll ever play football again.”
Prof Sharma believes it would be up to both the player and the club to assess the risks of continuing to play.
He said: “The good news is he will live, the bad news is he was coming to the end of his career, so would he play another professional football game, that I can’t say.
“In the UK he wouldn’t play. We’d be very strict about it.”