Lallana could make his first start in a month on Saturday when new boss Pochettino bids to earn his first victory in charge against reigning champions Manchester City.
Back to full fitness after suffering a knee injury in the 1-0 defeat at home to Reading on 8 December, Lallana is keen to help his side in their battle against relegation.
"I have been itching to get back now the whole time," said Lallana. "I've been there or thereabouts the last three or four weeks and I've made a couple of appearances off the bench.
"I am fully fit and eagerly hoping to get some time from the start, whether I do, we will find out on Saturday. I was injured when Alan Pardew left the club and Nigel Adkins came in so I've experienced similar to this.
"It was frustrating because you want to get out there and prove to him your worth, really.
"He has been great and the language barrier is not an issue. You communicate fine and his assistant Jesus Perez, Miguel D'Agostino and goalkeeping coach Toni Jimenez can all speak English well.
"It is great and I am so far thoroughly enjoying my time under the gaffer."
Southampton last week