The Argentina goalkeeper is preparing to face England in Wednesday's World Cup semi-final after Lionel Scaloni's side beat Switzerland in extra time.
Following that 3-1 win in Kansas, Martinez was pictured in conversation with Manzambi, who had missed the match through injury, in footage that has since gone viral. After a brief exchange, Martinez broke into a wide smile, pointed at himself and said: "Going to Villa?!"
The clip suggests Manzambi had just told the goalkeeper he was set to become his new teammate, with Martinez appearing both surprised and delighted by the news. It comes as reports elsewhere indicate Villa have all but completed a deal to sign the SC Freiburg youngster, having overtaken Newcastle in the race for his signature following the World Cup.
Manzambi enjoyed a standout tournament for Switzerland before their exit, scoring three goals and providing two assists in the four matches he played. An injury ruled him out of the round-of-16 win over Colombia and the quarter-final defeat to Argentina, but he did enough earlier in the competition to cement his reputation as one of the brightest young talents in Europe.
The midfielder made 27 Bundesliga appearances for Freiburg last season, recording ten goal contributions, comprising five goals and five assists, form that has made him one of the most sought-after young players in the market this summer.
Villa's move for Manzambi has taken on added significance after Amadou Onana suffered a serious knee injury at the World Cup, leaving a gap in Unai Emery's midfield that the Swiss international could now fill. The lure of Champions League football at Villa Park is understood to have played a part in swaying the youngster's decision, with a formal announcement expected once the tournament concludes and a medical can be arranged.
For Newcastle, the collapse of their pursuit continues a frustrating pattern this summer, having already seen other targets slip away to Premier League rivals. Villa, by contrast, look to have pulled off one of the window's more eye-catching pieces of business, with Martinez's viral reaction adding to the excitement building ahead of Manzambi's expected arrival.