Mexican international broke his leg at the World Cup last summer.
Mauricio Pochettino was appointed as the new manager of Tottenham Hotspur this summer and one area of the team he immediately wanted to improve was the defence.
He snapped up the likes of Ben Davies, Eric Dier and Federico Fazio in the summer, also confirming a deal for DeAndre Yedlin, who arrived this month.
Pochettino signed Moreno from Dutch side AZ Alkmaar in 2011 when he was Espanyol boss, so he has previous with the player.
And that interest has not gone away, according to reports this week. Espanyol need to balance their books and see the sale of Moreno as the quickest way to do so. Pochettino might be able to get his man.
However, Moreno has only played 30 minutes of football this season!
Moreno, who was earning the move by impressing at the World Cup in Brazil, soon had his ideas dashed. Moreno thrashed out at a loose ball during the second round tie with Holland, catching Arjen Robben with his shin, breaking the tibia in his left leg.
Moreno underwent surgery on the injury, and subsequently more surgery in October on his damaged leg and only made his return with a 30 minute cameo v Barcelona prior to the Spanish winter break.
Tottenham need to reinforce their defence. Vlad Chiriches and Younes Kaboul look destined for an exit and Pochettino knows Moreno, he knows he can get the best out of him.
But is he worth a gamble in January? The answer is no. Tottenham should wait to see if he can prove his fitness first and then consider going for him in the summer instead.