The Chesterfield right-back is a hot commodity this summer.
"It's no secret that right-back's a position where we've made a bid for a player.
"The other club's valuation is higher than ours at this moment in time. Do we go back in? We'll have to wait and see.
"Obviously the player's made it aware that he wants to play at a higher level with a transfer request that has gone in that I've seen in the press. We'll see where we go.
"We're working to conclude these days but they are not as easy as everyone expects them to be."
Preston made a bid for the player earlier in the month that was rejected by the League One club.
The Yorkshire Evening Post reported last month that Leeds were keeping tabs on the player, considering the apparent interest in Sam Byram. They claimed they had been in touch with the player, who won the Player of the Year and Players’ Player of the Season awards at Chesterfield last term.
Darikwa has reportedly handed in a transfer request at Chesterfield, as he hopes to make a move to the Championship this summer.
Darikwa, who has Zimbabwean heritage, had a fine 2014-15 season. He featured in 56 games for Chesterfield last term, scoring a goal against Crewe in April.
It remains to be seen where he will end up playing his football next season. Chesterfield? Preston? Burnley? Or perhaps even Leeds?