Seedorf said: "The fans do well to dream and we'll try to make them dream again, but we need to be realistic.
"We are building a house: it'll take time to see the Milan that we want. I ask everyone to have a little patience.
"Ibrahimovic is a good lad, he is generous and cares for the team. I knew him when he was at Juventus.
"I followed him since he arrived in Italy from Ajax because I liked him a lot. Coming to Milan sooner or later was his dream, but many things happen in football.
"It's in the League that you must measure yourself and find continuity game after game."