Plum too far gone?

Bensparky1 starts with ...
Hi all. Here are my two plums (Mariposa and Santa Rosa) which I bought 2 years ago and planted straight in the ground. After a terrible year last year with disease, I trimmed it right back, including the dead wood. I have sprayed with copper through winter and the two trees are breaking bud now.

What do you think is the problem here with these leaves? They seem quite pale and a bit like they have chlorosis, although I suspect this is not the case. On one of these pics you will see that an entire branch is void of any buds or blossoms etc the tip of it - should I get rid of this?

Soil - Medium clay which drains okay. Mulched with wood chips.
Water - 2-3 watering cans per week at the moment.

Thanks all,
Ben

Pictures - Click to enlarge
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