The former Hamilton and St Mirren attacker moved to McDiarmid Park a year ago but has started just twice for Lomas' team since the turn of the year.
Of his 38 appearances for Saints, 21 have come from the bench and the Dutchman admits he is growing frustrated.
Now the 22-year-old says he may have to move on in the summer if he cannot convince his Northern Irish manager of his talents.
Hasselbaink told Press Association Sport: "I just want to play at a higher level and work on more of my strengths. That's why I came here to Saints.
"But I know I need to play more games. The boys are great and it's a good club - I've enjoyed my time here.
"However, for myself, I'd like to have played more games and the gaffer knows that. It's his decision and I have to respect that. I have to keep training hard and try to change his mind.
"I just need a chance. The gaffer knows what I can do but it's up to him. The hardest thing to do as a player is to change a manager's mind.
"It is hard for any player not to play, not just me. It's been a difficult time because I haven't started games for weeks.
"I don't know what is the right thing to do. Do I need to stay here because I have a year left on my contract, or does the gaffer have other plans for me?"