The 30-year-old has previously suggested he could be persuaded to switch allegiance before and now believes there is backing for him to make the move.
"I haven't been called to play for Spain and I'm getting a lot of support here (England) so it's something to consider," said Almunia to Veo TV.
"I only look at this issue from a sporting side, it has nothing to do with feelings nor rejecting my identity because I'm probably more Spanish than some of those in the Spanish national team.
"I only say I am getting support here to play at international level and in Spain this is impossible as they have two of the best goalkeepers in the world (Real Madrid's Iker Casillas and Liverpool's Jose Reina).
"So if a door was to open for me to play at international level, I don't say I would take it but I would study the situation to see what consequences it would have."