The economic viability plan presented to Levante's shareholders states that the club paid 3.8 million euros for Eyong on September 1. This is a relatively low fee considering the player's value has risen to 20 million euros, as reported by Transfermarkt. As a result, Eyong has attracted the attention of top European clubs, including Barcelona and Manchester City.

However, there's a complex contract between Levante and Villarreal that affects the transfer of Eyong. If an offer of more than 15 million euros is made, Levante must sell the player and give 20% of the capital gain to Villarreal. If the offer is rejected, Levante must compensate Villarreal with the same amount. Villarreal also have the right of first refusal to match any offer next summer and to buy the player back. The termination clause is set at 30 million euros.

This contract is a significant factor in the transfer of Eyong, as it affects the potential profits and losses for both clubs. The player's performance will be crucial in determining the outcome of this situation.