QPR are reportedly taking enquiries from West Bromwich Albion over their Brazilian keeper Julio Cesar.
Talks between the clubs are believed to be at an early stage, but a loan deal could be on the cards.
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Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.