Suggestions for improvement solicited.

[polarwoc]

I attempted a work on this thread. Spent quite some time on it, but dissatisfied with the result. Has anyone got a suggestion on how I can improve the resulting image so that it looks better?
Essentially, the man in this pic:

needs to be replaced with the man in this pic:

and this is my progress so far:

Please suggest.

 

[DesignSomething]

Looks good to me.

 

[polarwoc]

Apologies!
I meant the man in this pic:

needs to be replaced with this man:

and this is my work so far (I placed the images wrongly earlier on):

 

[Eggy]

This time it isn't so much the resolution that is the issue but the really poor faded quality.
The faded factor prevents any decent sharpening because there are simply not enough pixels to work with.
Without a 'reconstruction' (based on another photo) there is no way to achieve a credible result.
The OP mentions the horrible quality but that's an understatement...

When joining pictures with that amount of difference in quality there are two options:
- make the 'worse' one better to match the 'good' one, which in this case is not possible or
- match the 'good' one to the 'bad' one

Sometimes it is better to inform the OP that it will not be possible.

A quick test after using auto color/tone/contrast and nothing more gives this

 

[IamSam]

Sorry, I commented in the original thread.