The 37-year-old left the Catalan giants in 2015 to head to Qatari outfit Al Sadd, where he has netted 12 times in 44 appearances.
However, the former Barcelona captain insists he wants to return to the Nou Camp and follow in the footsteps of Pep Guardiola and Luis Enrique to coach the club one day.
Xavi was crucial in helping Barcelona to win three La Liga titles and two Champions League crowns during an incredible four-year spell under Guardiola, while he also added a further La Liga and Champions League title to his CV under Enrique.
The former Spain international is contracted to Al Sadd until 2018 and he then intends to hang up his boots and step into coaching back in his homeland.
Xavi said: “My aim is to arrive as a coach at Barcelona. You never know what will happen, it’s not only up to me.
“It depends on what you’re capable of, the situation, the moment, the circumstances. But my objective, what I want to do, it’s certain that it’s to work for FC Barcelona.”
Southampton have announced plans for a two-week tour of China as part of their pre-season preparations for the 2018-19 season.