In the original tweet, published just over two weeks after his heart attack on May 1, the former Real Madrid goalie said "Retirement, there will be a day that I'll have to retire. Let me announce this when the moment comes. For now ... everyone relax! I had an appointment yesterday with Dr. Filipe Macedo. Everything is ok. This is great news that I would like to share with all of you!"
In his retweet, he said "The same from this tweet from one month ago, except the part of the meeting with the Doctor. More than anything because my appointment is tomorrow. Big hug to everyone."
The former Real Madrid captain suffered a heart attack during a training session with his current team, FC Porto, casting major doubt about his ability to continue in the sport.
Casillas' personal situation got even more complicated when his wife, journalist Sara Carbonero, announced that she went through a malignant ovarian tumour surgery on May 21.
On June 6, various Portuguese newspapers said that Casillas met Pinto da Costa, President of FC Porto, where he was offered the possibility to continue working in the club, but as part of the technical staff.
Casillas made his professional debut with Real Madrid under then coach, Welshman John Benjamin Toshack, against Athletic Bilbao in September 1999 in San Mames at the age of 19.
At Real Madrid, Casillas was in the team that won the UEFA Champions League three times, LaLiga five times, the Copa del Rey twice, the Spanish Super Cup four times and the FIFA Club World Cup twice.