The England international was unmoved by suggestions Falcao's arrival could jeopardise his position in the starting XI with United.
The England and Manchester United skipper said: "I obviously don't know how Falcao's arrival could affect my role, that's something you'll have to ask Louis van Gaal.
"I think it is a fantastic signing. He is one of the best players in the world. It is a real show of intent by Manchester United.
"It is a thrill. We have an exciting team. I am looking forward to the challenges ahead and I want it to be successful."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball