I quite remember tito telling the press that he talked to thiago and tried to convince him, So it's either one of those 3 things:
1-Tito lied (Highly unlikely)
2-Thiago lied (Unlikely)
3-Thiago had a different meaning to 'valuing' him, Which doesn't involve regular talks with the coach, But talks with the club about improved contract. (Most likely)
Here is the thing, You don't get to expect a better contract by simply being good enough to stay on the bench, And certainly not when you already intend to leave, What a spoiled brat.
Thank god he's gone.