The Colombian has struggled for first team football at AC Milan this season.
In January of last year West ham completed a left-back change around. They released Razvan Rat, who had been a flop at the club, and signed up Pablo Armero on loan from his co-ownership with Napoli and Udinese.
The Colombian left-back seemed a great signing from The Hammers but his stay with the club was memorable for the wrong reasons.
He played five games for the club, including his final appearance in April. He gave away the penalty in a 1-0 loss at home against Crystal Palace.
After the game West Ham boss Sam Allardyce slammed the performance of Armero, FourFourTwo reporting him as saying:
"The last thing we need to do is give a silly penalty away like we did and really in the end we have paid a high price for that.
"Pablo really shouldn't have given that penalty away and in the end it has cost us."
He never played for West Ham again.
But he went on to have an excellent World Cup with Colombia and in the summer was signed by Italian giants AC Milan on loan, much to the wonderment of bemused Hammers fans.
Armero has however struggled to find top form for the Rossoneri. He has played just eight times in Serie A for the club and is now set to return to South America.
It is reported by Sport Mediaset that a deal has already been agreed for the 28-year-old, who will now seemingly be on his way to Brazil and Flamengo before the transfer window closes in the country this month.
West Ham fans will not be surprised to see him on his way back across the water.