Goal confirmed on Sunday the two clubs have reached an agreement worth £25.9 million for the striker, but Amadeo Salvo says a problem with agents is delaying official confirmation
Club president Amadeo Salvo had earlier confirmed that the striker is on the verge of a move to Spurs, describing the agreement between the two clubs as "total".
Goal revealed on Sunday that the north London outfit are set to pay the striker's release clause of €30 million (£25.9m) following a phone call between Spurs' technical director, Franco Baldini, and Salvo.
The Liga club's official Twitter account posted a list of 23 players who would make the trip across the Atlantic, but Soldado was not included.
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"The agreement with Tottenham is total," Salvo is quoted as saying by Las Provincias.
However, the Che chief has admitted that the switch will not be completed until issues involving Soldado's representatives have been resolved.
"A problem with the agents has emerged," he added. "[Once resolved] he will go."
Elsewhere, Tottenham centre-back Bongani Khumalo has joined Championship side Doncaster Rovers on a season-long loan.
The South Africa international spent last term at Greek side PAOK. This will be his third spell in England following stints at Preston and Reading.