Fed-up City today told Willy Topp's South American club: Agree to our deal by Monday or forget it.

The Bantams have made a final "take it or leave it" offer for the Chilean striker after becoming increasingly frustrated by the way the terms of the transfer keep changing.

Topp has been training with them for nearly two months and the 21-year-old is happy to sign the revised two-year deal on the table.

But City's bid to sign him has been held up by the complicated compensation demands of his former club Universidad Catalica.

Joint-chairman Mark Lawn has made it abundantly clear everything must be done by the book, which means going through the football authorities in both countries, or they will pull the plug.

He was last night still waiting for a response to what he called the club's "final" proposal.

He said: "What we believe were the goalposts were changed at the last minute so we've gone back with this offer and made it clear this is it."

If it goes through, Topp would be the first player City have paid for since 2001. He is prepared to accept lower wages than he was offered in the first place when City believed they were getting him on a free transfer.

Boss Stuart McCall admits he has been as much in the dark as anyone over the Willy, won't he' deal.

McCall believes Topp can offer a different attacking option to his squad, although he will have to work out how to best accommodate him.

"Willy is a talented player but sometimes in the league we're in we've got to work our hardest to get the best out of him.

"In an ideal world we're all going to play lovely, flowing football and get the ball in to Billy to do his magic. But we know that's not going to happen, especially with the type of football getting played after Christmas when the pitches are not going to be bowling greens.

"He's a similar type of player to Benito Carbone and could he come down and play at our level? Yes, with his ability but have we good enough players around him to get him the ball?

"But Willy has something a bit different to what we've got. He's not physically robust but he doesn't mind that side of it and he's mentally strong."