Express Sport can reveal that the Hammers hope to land the Honduran international, although it remains to be seen if the Premier League club have the financial muscle to strike an agreement before the end of the month.

The Hammers would prefer to take Izaguirre on loan then pay the bulk of any fee, around £4 million, in the summer as they will then know if they are still in the Premier League and entitled to their cut of the enhanced new TV rights.

A potential loan deal with a view to a summer sale has already been put to the Hoops.

Hammers boss Sam Allardyce has made the left-back position his priority and Izaguirre is at the top of his list – even though he has other options.

Celtic boss Neil Lennon, who is still trying to fend off interest in Gary Hooper from Norwich, is not under any pressure to sell and wants to keep the bulk of his squad together for the Champions League tie with Juventus.

The other side of the coin, though, is that Izaguirre’s form has dropped after his first-season heroics saw him named Scotland’s player of the year, while Celtic know the 26-year-old is keen to try his luck in England.