Ahead of the 2019 AFCON qualifiers against Malawi, Seedorf has revealed he is close to having Liverpool defend Joel Matip available for selection once again.
Matip quit international football after the 2014 World Cup has turned down recent call-ups to the squad.
"Matip is a very good player and we spoke to him before the game against Comoros," he explained, as quoted by BBC Football.
"He was injured and unavailable, but we have continued talking to him. We don't want to rush with him.
"Matip asked for some time to get back in shape and that's very important. He is a player we're optimistic about and we'll see what the future brings."
The Indomitable Lions qualify automatically for the 2019 showpiece as hosts but are still participating in the qualification process.