Constantine's nephew King Felipe of Spain and his wife Queen Letizia have been tipped for a visit.

Source: https://www.express.co.uk/news/royal/1721670/prince-william-kate-middleton-athens-greek-king-Constantine-latest-news-ont

Jaime Del Burgo, 53, who is currently based in the UK, has recently contributed to a tell-all book about the Spanish royal, where he makes the far-fetched claim they were still romantically involved after Letizia's 2004 wedding to King Felipe.

Source: https://www.dailymail.co.uk/femail/article-12822751/queen-letizia-ex-brother-law-relationship-royal-sister-telma-marriage.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Meanwhile, King Felipe was also stylish in a navy two-piece single breasted suit, which he wore alongside a pale blue shirt, and deep red tie for the event.

Source: https://www.dailymail.co.uk/femail/article-11772895/Queen-Letizia-Spain-wears-pinks-attends-National-Culture-Awards-Spain.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

She stunned onlookers as she graced the red carpet in a glamorous black gown alongside her husband, King Felipe, 55.

Source: https://www.dailymail.co.uk/femail/article-12544843/Flower-power-Queen-Letizia-Spain-stuns-floral-two-piece-attends-Cancer-Research-event-East-London.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Spanish King Felipe VI was at Finca Cortesin and helped present the trophy to the winners.

Source: https://www.sandiegouniontribune.com/sports/national/story/2023-09-24/us-and-europe-still-tied-after-halfway-point-of-final-day-at-solheim-cup-in-spain