The former Napoli captain has signed for IFK to the end of the season.
The 33-year-old refused to rule anything out adding that anything is possible after his contract with the Swedish giants expires at the end of August.
"Never say never, and I'll never close this [door] because I played there all of my career," Hamsik said at the press conference.
“They have a special place in my heart, it is my second home and of course it is maybe one of the opportunities, but I am not thinking about this.
"Only today I signed my contract with IFK Goteborg and I'm only thinking about this club and this moment. Afterwards we will see what will happen."
The Slovakia captain added: "[IFK] was the only club and was a club who was very interested in me. They were very serious and very quick, and I wasn't considering anything else."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!