Watford defender Neill has joined Championship rivals Doncaster until April 22 as he looks to get some regular game time in a bid to enhance his chances of playing at the 2014 World Cup with Australia.
Dickov played with the 36-year old Aussie centre-back at Blackburn Rovers so is well-versed to pass judgment on the attributes he will bring to South Yorkshire.
"Lucas is as fit now as I have ever seen him, which is credit to him and his attitude," Dickov said.
"I played with him at Blackburn and I know him very well.
"He brings a wealth of experience and knowledge of the game and is a great person both on and off the field."
Dickov added: "There were a lot of other Championship clubs interested in signing him but he wanted to come to Doncaster."
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