Are they not fully fit?
Alzate has played every single Standard game since he signed in August, apart from one on the 24th September when he was serving a 1 match ban
Sarmiento has featured in 17 of West Brom's 22 Championship matches, including the 8 most recent.
:shrug:
I'd very happily welcome any of Sima, Sarmiento, Moran and Alzate to our current squad. Any / all of them would be very useful right now, and would be getting playing time.
Sarmiento back here in January, looks, in the short term at least, to be a very attractive option.
Indeed.
Ciara Walsh was carried off at the World Cup on a stretcher, in tears, mumbling "I've done my knee. I've done my knee" - then played in the next game!
And remember Leandro Trossard at St.Mary's? - given oxygen on the pitch, then stretchered off - only to play a few days later!