Eriksen, 29, suffered cardiac arrest while playing at Euro 2020 in June and said earlier this week that he "died for five minutes" when he collapsed.
Conte said Eriksen is a "really important player" and a "top man".
The Italian signed Eriksen from Tottenham during his time at Inter Milan.
Eriksen helped Conte win the Serie A title last season but was no longer able to represent the club as players fitted with the implantable cardioverter defibrillator (ICD) he required after his collapse cannot compete in Serie A.
Eriksen has now been filmed striking balls on his own in training and this week said he feels "back in top shape" with an aim of playing for Denmark at the World Cup in Qatar.
Asked if Eriksen could train with Tottenham, Conte said: "For sure, it was great, it was fine, to see him on a pitch, to see that he is kicking a ball.
"What happened this summer was very not good, not good, for the people that worked with him, and the people that know him. I was scared in that moment.
"And now, to see him again ready to play football is great news. I think for Christian, the door is always open."
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