West Ham sold Lucas Perez to Alaves in the summer for around £2.2 million, according to Sky Sports.
At the time, many Hammers fans were happy to see the Spaniard leave. He made little impact in east London.
Perez scored just six goals in 19 games after joining West Ham from Arsenal in the summer of 2018.
His time at the London Stadium was uneventful to say the least.
The 31-year-old has really impressed for Alaves this season, however, leaving Hammers fans to ponder what might have been.
Perez scored again for the La Liga outfit yesterday, this time against Real Madrid, and he has now scored eight goals in his last nine games.
The Spaniard has really impressed. His finishing has been deadly, and his all round game has made a huge difference to the way in which Alaves play.
Did West Ham make a big error moving him on too soon for such a small fee? As things stand, the answer to that questions seems to be a resounding yes.
There is the argument that La Liga is more suited to Perez’s game, however, with the physicality of the Premier League proving to be too much for him.
If he continues to score for Alaves on a regular basis, however, selling him for just £2.2 million will surely go down as a big mistake from West Ham.