I've got to agree with Howdy/cam. It's easy to say "get them to extend" but players don't have a reason to extend unless the contract is way above there current one or they are getting on a bit.

Brin
Barlaser for example. Go back 12 month and offer him a contract. If at the time he was getting 4k in league 1. How much are you offering as a new deal? 5k,. 6k? 10k? If you offer 6k then 10k with promotion. What are you doing if he says no.?
Now what if he says yes? Are you offering the same to wiles, ogbene, Viktor. They all say yes. Brilliant we have 4 players on 10k per week for the next 3 years.... Now remove knowing they have turned out to be good championship players and all four are flops?

I know all the above is fictional but what if.