I see it from the way other than expectation to cash down bitterness he had during he drove McLaren, but how good he will develop a car from the 4th in the championship.
This is really a big job, the policy of the use of MES for the series will be another task from which McLaren will have some benefit for the Renault to fight against.
If both parties satisfied with the result, it could probably the single season contract to be extended. Who would want to hire Alonso other than Renault? Ferrari has said that Kimi is stronger than FA, unless if he can prove a miracle this year to make their eyes open.