Shouldn't his 97/98 stats for Al-Nasr be added?

This is a commercial transaction. The player was listed on the team Al Nasr just 8 days.
Played in 2 games, scored the winning goal in the final. Got my money and went home.
http://www.rsssf.com/tablesa/ascup98.html Cup Winners' Cup 1997/98
+
http://www.angelfire.com/tx2/Stoichkov/alnasr.html

But still, shouldn't it be added to the existing data?