Create a 3D Character Model but in a Different Style than the Concept Art

Hi,
I'm in need of a recreation of the 3D Character Model (grey image)
BUT in the style of the Textured image models

I sent three models and their textures for you to study and use as examples for the style and polygons the recreated grey image model has to be in
It will be in the link and as an attachment

The three textured models: https://drive.google.com/file/d/1qsq0BC17QCYWADlW0rZS2yiwxqFjhEHW/view?usp=sharing

The textured models (From the video game, Half-Life 2) are lower poly and not as "realistic", but still maintains a sense of low poly realism. The zip file has the textured models, for studying the style, polygons, textures and everything else, to recreate the grey image model closer to it

- Has to be textured
- Low poly (Use models in Zip file as what style it should fit with and emulate)
- On a budget, so the low the price as you can
- Has to be done before January, IF possible. If not, no worries
- Retopology for me to rig
Exported as FBX or OBJ

If you have any questions or need specifications, let me know.
Thank you and hope to work with you!