Gerrard is now Liverpool's prime midfield anchor.
Asked whether Gerrard's new position increases competition for places in the midfield, Allen told Liverpoolfc.com: "In some ways I think it does.
"With Lucas suffering an injury and being out for a few weeks as well, from a personal point of view, it probably is a position that is up for grabs. Competition is always fierce when you are at a club like Liverpool.
"When I joined the club, playing further forward was a role that I played consistently for two years at Swansea, so I guess that was always my number one aim.
"I had a chance before the injury at Chelsea to have a few games in that role and really enjoyed it, so now I'm over this injury it's a case of getting back to training and performing well wherever I'm asked to play and I'm happy to do that.
"Steven has been great for us. You always say that the top players can play anywhere and that was obviously going to be the case with Stevie.
"He's got the ability to do anything. In the Everton game especially you could see he played a massive part and did brilliantly."
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