Campbell left Notts County earlier this week just a month after signing a five-year contract with the club.
The former England defender claimed today that he was informed about players the club were chasing.
He said: “I’m a bit surprised by Sol’s comments. Things have gone at an astronomical pace over the last few months.
“Signing nine players in three months is unheard of at our level and we’ve started work on a new training ground. We’ve been linked with about 88 players.
“But I’ve never talked about Benjani to anybody at all. Roberto Carlos – Sven, I understand, did talk about but it never went beyond a conversation.
“Sven talks every day about four or five players we might be looking at – but most are more aligned to League Two.
“We’ve said all along there may be three or four (stars) we may take as long-term prospects – if a star is defined by 70-80 international caps – and Sol was signed up to that term.
“Ade Akinbiyi will be joining us tomorrow, subject to a medical. That’s the only signing we’ve got in mind at the moment.”
