This is the 7470th most frequent Turkish word.
görüştüğüm
"The one I met/spoke with."
'görüştüğüm' means 'that I met with before'. It introduces a subordinate clause describing 'bilgiler' as information derived from past discussions.
Bugün sabah görüşeceğimiz kişilerle ilgili, daha önce görüştüğüm bazı bilgiler var.
This morning, regarding the people we will meet, I have some information from my previous meetings.
'görüştüğüm' signifies 'who I met with'. It qualifies 'arkadaşım' as having been met yesterday.
Dün görüştüğüm bir arkadaşımla sinemaya gitmeye karar verdim.
Yesterday, I decided to go to the cinema with a friend I met.
Here, 'görüştüğüm' implies 'that I discussed with.' It connects 'konuları' to the previous discussions held by the subject.