Hi Clive and a very warm welcome to you. Football is good - any exercise is good provided it is within your capabilities whilst you have an active infection.
I am assuming you have had a scan to diagnose the bronchiectasis. I am wondering if you are just being seen by your GP or if you have a respiratory consultant. Consultant should really have referred you to a respiratory physio for you to learn mucus clearance techniqjues.
Here is a link which is very informative. It is going to be, along with the bronchiectasis guidelines, updated later this year but many feel it is the best info around at present.
Any questions or comments feel free to post as there will usually be someone around to offer support.