I don't think he's injured mate. I think it's more of a case of Trapp trying out the youngun seeing as how it's just a friendly.
Just found this. Henderson in Republic squad Keiren Westwood: Has returned to Sunderland West Ham goalkeeper Stephen Henderson has replaced Keiren Westwood in the Republic of Ireland squad for Tuesday night's friendly against Oman at Craven Cottage. Westwood started in Friday's 2-1 win over Kazakhstan but has been allowed to return to Sunderland early as Giovanni Trapattoni looks to name an experimental line-up for the game in London. Henderson, back-up to Jussi Jaaskelainen at Upton Park, has not won an international cap for the Republic but was named on the bench for February's friendly draw against Czech Republic. Trapattoni confirmed on Sunday that Millwall stopper David Forde will start in goal so 24-year-old Henderson is likely to be among the substitutes on Tuesday night. Trapattoni also has Motherwell keeper Darren Randolph available to him. The Italian has already allowed Robbie Keane, Darren O'Dea, John O'Shea, Jon Walters and Glenn Whelan to return to their clubs following Friday's fortuitous victory in Astana.
Think it'll be a case of giving the young uns a run out as it's a friendly so no real hassles, just hope McClean stays fit after this as he will probably play.
