Mauricio Pochettino will be present at the Wanda Metropolitano this evening when Tottenham face Atletico Madrid in their Champions League last-16 encounter.The Argentine has been invited by the Spanish club to attend the fixture, marking his first occasion watching Spurs from the stands since departing in 2019.His attendance has intensified speculation surrounding a possible return to north London. The current United States national team manager faced his former side twice during his spell at Chelsea in 2023/24, winning both Premier League meetings.TRENDINGStoriesVideosYour SayThe timing of Pochettino's appearance coincides with considerable uncertainty at Tottenham regarding their managerial situation.Pochettino's principal reason for attending is to evaluate Johnny Cardoso, the American midfielder currently plying his trade for Atletico Madrid. With the World Cup approaching this summer, the USMNT boss is eager to observe his key players based in Europe competing against top-level opponents.Cardoso's display against a Premier League side could prove decisive in determining whether he secures a spot in the final tournament squad. Tottenham are actively searching for a permanent manager following their decision to dismiss Thomas Frank last month. Croatian coach Igor Tudor was installed on a temporary basis to oversee the remainder of the campaign, though his tenure has thus far failed to spark any improvement in the team's fortunes.The club finds itself navigating one of its most turbulent periods in recent memory. Every development in the managerial search is being closely monitored by supporters desperate for the stability that characterised Pochettino's previous reign.LATEST SPORT NEWS:Man City star sparks neighbour row as 'police called' on flying drone after 'invasion of privacy'EFL side sack manager with 10 matches to play as former Premier League star to step inWith 100 days until England's World Cup opener, Tuchel needs six unlikely stars to achieve gloryThe ongoing uncertainty has left Spurs in limbo as they weigh up their options for a long-term appointment.Pochettino has made no secret of his enduring affection for the club where he spent five years. Speaking to Sky Sports, he declared: "When I left the club I always remember one interview I said I would like one day to come back to Tottenham. I am in the USA, so I am not going to talk about that now - but what I said then I still, after six years or five years, feel in my heart. He added: "Yes, I would like one day to come back."The Argentine also outlined his belief that Spurs should be competing at the highest level. He suggested that winning the Europa League under Ange Postecoglou was insufficient, arguing the club ought to be challenging for the Champions League and Premier League.Tottenham will face Atltico Madrid tonight in the first leg of their UEFA Champions League round-of-16 tie.Our Standards: The GB News Editorial Charter