Why Kaka was at Carrington
Former AC Milan and Real Madrid midfielder Kaka was spotted at Manchester United's Carrington training ground on Monday.
The Brazilian legend was there on a training course, having enrolled on UEFA's Masters for International Players' qualification.
The 2007 Ballon D'Or winner retired from the professional game back in 2017 after a final spell with Sao Paulo back in his homeland.
Kaka also attended United's thrilling 3-1 win over Arsenal at Old Trafford, and was pictured on Instagram alongside Cristiano Ronaldo, goalscorer and debutant Antony, as well as his former international team-mate Julio Cesar.
Highlights of Kaka's decorated 17-year career at the very top level include the UEFA Champions League he won with Milan back in 2007.
Milan faced United over two legs in the semi-final and the Brazilian, then aged 25, produced a glittering performance at Old Trafford, scoring twice in a 3-2 defeat.
Cristiano Ronaldo and Wayne Rooney (2) were both on the scoresheet to hand Sir Alex Ferguson's men a slight first-leg advantage.
Carlo Ancelotti's Milan side would eventually run out 5-3 aggregate winners, thanks to a 3-0 second leg victory at the San Siro, and they went on to beat Liverpool in that season's final in Athens.
UEFA's programme currently boasts graduates including Luis Garcia, Kolo Toure and Gazika Mendieta, with Kaka and Cesar looking likely to become the next two names to be added to the governing body's ever-growing list.
Expected to make the plunge into management following the Qatar World Cup later this year, it remains to be seen whether Kaka will begin the next chapter of his career in Europe or in his native South America.