The Chile defender has been unable to feature for his new employers as he awaited a work visa to enter the country but he was finally granted clearance towards the end of last week.
However, he still missed Saturday's stunning 5-0 triumph at Middlesbrough as he only arrived in England on Friday.
His availability could be perfect timing for head coach Roberto Di Matteo with the news left-back Joe Mattock will be out with an ankle injury while the left-sided Marek Cech also remains sidelined with an ankle problem of his own.
Influential midfielder Chris Brunt (knee) has also been ruled out on Tuesday night while long-term absentees James Morrison (heel), Neil Clement and Ishmael Miller (both knee) are still missing.
