It is nice to hear about Odegaard's being keen on extending his contract with Arsenal already now. Because he is one of the most valuable players for Arsenal so they wouldn't like to lose him early. Extending with him would prevent some other teams from trying to allure the player to themselves as well.
Arsenal have built a great team with the transfers of really talented players. Their main focus from now on should be to have long-term contracts with the important players and to sign some experienced players if possible. This would secure the future of the team and increase the probability of achieving bigger successes as well.