Everton are pushing Barcelona to accept their offer for Jean-Clair Todibo.
The young French defender is on-loan at Schalke to the end of this Bundesliga season, but will be sold by Barca this summer.
Sport says Everton have offered €22m up front plus €3m in bonuses for Todibo. However, with PSG also keen, Barca want to take their time before cashing in.
In contrast, Everton want to wrap up a deal immediately and are frustrated with the lack of response from Barca since making their proposal.
At Goodison Park, Everton see Todibo as cover for the injury-plagued Yerry Mina - signed from Barca 18 months ago.