Manchester United manager Jose Mourinho was spotted in the stands during Austria's 3-2 win over Serbia on Friday night.
Photographed in a baseball cap trying to keep a low profile, the Portuguese coach watched on as his Serbian summer signing Nemanja Matic & co failed to wrap up their spot at the 2018 World Cup.
A win at home to unfancied Georgia in their final group game will secure Serbia's place in Russia next summer.
There has since been plenty of speculation regarding Mourinho's presence in Vienna's Ernst Happel Stadion.
Some suggested that he was there to watch Southampton's Dusan Tadic but the Mirror believe he was there to watch another Serbian winger.
The Mirror report that Mourinho was actually there to cast his eye on Eintracht Frankfurt's 22-year-old star Mijat Gacinovic.
Gacinovic, who played 87 minutes of the 3-2 win, was brought to the Bundesliga in 2015 and became an integral part of the first team under Niko Kovac last season.
His debut for the national team came earlier in 2017, coming off the bench to score in a 3-1 away win over Georgia.
Arsenal have also shown interest in the versatile forward, reportedly sending scouts to watch him play for Serbia too.
According to the Mirror, Matic was the man who alerted Mourinho to the talents of his young compatriot after being impressed by his work rate and versatility.
The 30-year-old central midfielder was a key player under Mourinho at Chelsea and the highly-rated coach splashed out £35m on bringing him to Old Trafford this summer.
Manchester United failed in their attempts to sign Ivan Perisic from Inter Milan but Gacinovic can also play wide on both the left and the right flanks.
He is also able to play a creative role in the heart of midfield.
Fellaini's ligament damage
Manchester United are set to face rivals Liverpool on Saturday but will be without Paul Pogba and Marouane Fellaini.
Pogba has been sidelined with a hamstring injury whilst Fellaini suffered ligament damage whilst on international duty with Belgium.
The afro-haired midfielder scored a brace in the recent 4-0 win over Crystal Palace and will be a big miss for Mourinho.
“He [Fellaini] had some difficult times when people didn’t recognise his qualities," said Mourinho before the international break. "When other managers didn’t like so much the qualities he has.
“He had to be a strong character. He is a fighter, a guy with lots of pride and I am really pleased I helped him reach this level and change the perception the fans have now. I’m really happy for him.”