Millwall have complained to the Metropolitan Police over its decision to halve the club's allocation of tickets for their Carling Cup tie with West Ham.

The Lions said today they had agreed with the Hammers to have 3000 tickets for the second-round clash at Upton Park on 25 August only for the police to step in.

Millwall fear that with fewer tickets available their fans may try to get seats in the West Ham section, creating a potential for crowd trouble.

The League One club have written to the police, Football League and West Ham calling for the decision to be reversed.

Millwall managing director Andy Ambler said: "It would seem to us to be far more sensible to give as many Millwall supporters the chance to watch the match safely and securely within the visitors' section at the ground."

Meanwhile, Matthew Upson is hoping that the Hammers can strengthen their squad. The defender, who is set to captain the side at Wolves tomorrow, said: "The transfer window is still open and if we can tweak a few things, we can have a good season."