Ibrahimovic is Sweden's record scorer with 62 goals and can become its joint sixth most-capped player with 116 appearances on Wednesday.
Sweden, which has one point after its opening 1-1 draw against Ireland, still has a chance of qualifying for the round of 16 even though it has yet to register a single shot on target. Its only goal at Euro 2016 was an own goal. The Swedes almost certainly need a win against Belgium to qualify.
Looking ahead to the match, Ibrahimovic said: "We need to play a bit more as a team, need to be better." "There's a lot of pressure on us but we're still in there, we've managed to stay in there and we'll do everything we can to continue in the tournament," he said. "I feel good, I really feel 100 percent. Thus far I haven't really been able to play at my best level."
Sweden coach Erik Hamren highlighted Ibrahimovic's contribution to the team and to Swedish soccer in general.
"Our greatest star going is a big loss," Hamren said. "We have one international player that's really at the same level as Lionel Messi and Cristiano Ronaldo and that's Zlatan Ibrahimovic." Hamren added that Ibrahimovic had discussed retirement with him in "January or February" but that Ibrahimovic only confirmed it Tuesday.
"I think Sweden do have a bright future in football, but of course if we lose Zlatan Ibrahimovic that will be a huge loss," Hamren said. "As a goal scorer of course but also as an individual he has really helped Swedish football." Ibrahimovic can expect little sympathy from Belgium, at least not on the field.
"Hopefully it will be his last game tomorrow for Sweden," said Belgium defender Jan Vertonghen, who was a youth player for Ajax during Ibrahimovic's time there. "Lots of respect for his career, but I'm very selfish tomorrow."