Adelaide United are in no rush to secure coach John Kosmina, the A-League club's chairman Greg Griffin says.But striker Sergio van Dijk has "zero" chance of remaining at the Reds next season, according to Griffin.Kosmina, who has a handshake agreement with Adelaide which expires at season's end, wants a longer-term deal."Kossie has been a very important part of the revival of this club and we all appreciate and acknowledge that," Griffin told reporters on Wednesday."And at the right time, we will sit down with him. He has got a direct line to us, he will let us know what he thinks and when he wants to push it."I think he wants a longer term and they are the sort of things that we need to sit down and talk about."Kosmina has lifted the Reds to second on the league ladder this season after taking over in December 2011 when the club parted with Dutchman Rini Coolen.Coolen, who departed 18 months into a four-year contract, is suing United for unpaid salary in a court case listed for hearing later this month.Griffin said Kosmina's tenure hadn't been discussed by United's board."I can guarantee you that we are not speaking to any other coach ... that should be of great comfort to Kossie," Griffin said."We have to sit down and work out how he wants to progress and how we want to progress and, as we haven't even discussed it at board level, it's simply premature for me to speculate because it's a board decision."The agreement is for a year, the agreement is only halfway through, and I don't know what you normally do in business but I normally wait until the contract nears the end before something happens."But frontman van Dijk, the A-League's 2010/11 Golden Boot winner who can't get a game this season, won't remain in Adelaide next season.Van Dijk has fallen from favour under Kosmina to the extent he has not even been able to make the substitute's bench, playing just three games this season.Asked what chance of van Dijk playing with Adelaide next season, Griffin bluntly said: "Zero".