Hi,
Udaya Lagna is placed in Makara Rashi (in the Rahu-Ketu axis), with Lagna Lord Saturn/Shani-dev being Vakra or Retrograde and placed in the 12th house. He is weak and feeble with below par Vimsopaka Bala in Dasha Varga – not to mention he is in Mrita Avastha.
Further, native is in the midst of 3rd and 12th lord Jupiter/Guru-dev’s Maha-Dasha and Antara of Ketu – followed by that of Venus/Shukra. Jupiter/Guru-dev is placed in his Uccha-Sthana or sign of exaltation in the 7th house of Kalathra-Sthana, along with Yogakaraka Venus/Shukra, 8th lord Sun/Ravi and Ketu. For the records, Jupiter/Guru-dev is not really a benefic for the birth-chart.
On the sidelines, natural or Naisargika Kalathra-karaka Venus/Shukra participates in Sukshma Parivarthana with Saturn/Shani-dev, at Nakshatra level and Rashi Parivarthana with 7th lord of Kalathra-Sthana Moon/Chandra.
In my humble opinion, the youngster has limited and feeble Yogas for marriage. You probably have a good idea for the underlying reasons. That said, a small window of opportunity exists and will open shortly. If the native is truly interested, you could collectively try putting in your best efforts, after offering special prayers to Lord Ganesha with unwavering faith, bhakti/devotion and a strong sankalpa.
If he does get married, sustaining the relationship also seems to be a bit of a challenge. Please exercise caution and act diligently.
Take care…