Hannover president Martin Kind is confident Mame Diouf will commit his long-term future to the club, despite growing interest in the Senegalese striker.
The 25-year-old still has a year left to run on his contract with the Bundesliga outfit, for whom he has scored 18 goals in 38 appearances.
Borussia Dortmund are reportedly keen on the services of the former Manchester United forward, but Kind has ruled out a transfer this summer as he instead works towards agreeing a new deal with Diouf.
"There have not been any enquiries," he said. "We are optimistic we will be able to extend his contract before the start of the season."
Kind told Sport1 television that his club's transfer dealings this summer are "concluded".
"We have initiated the transformation that we needed and are convinced we have made the right decisions," said Kind.
The Reds have signed Salif Sane from Nancy, Edgar Prib from Greuther Furth and Leonardo Bittencourt from Borussia Dortmund, while Konstantin Rausch and Mohammed Abdellaoue have both moved to Stuttgart.
Hannover ended last season in ninth position having qualified for Europe in the previous two seasons, and that is where Kind wants the team to be again at the end of next season.
"My goal is for us to establish ourselves as a side in the top third of the table," he said.