Brentford are building for next season and have extended Marcus Gayle's deal and signed Chelsea reserve Sam Tillen.
Gayle, 34, has agreed a new one-year contract, with boss Martin Allen highlighting the veteran striker's need for a good pre-season.
"Marcus needs that to get back to full fitness. He'll give us versatility and experience," he told the club website.
Left-back Tillen, 20, signed a one-year deal with an option for a second year.
He has represented England Under-19s.